Skin protection device for radiotherapy patient

Abstract

The invention relates to the technical field of medical equipment, in particular to a skin protection device for a radiotherapy patient, which comprises a shoulder seat, one end of the shoulder seat is provided with a stay tube, the top end of the stay tube bent upwards is provided with a lower jaw seat, the rear side of the stay tube is provided with a protection belt, and the middle part of the protection belt is provided with an air passage. The protective belt is located above the shoulder base, a protective pad capable of moving in the length direction of the protective belt is arranged on the protective belt, one end of the protective belt is connected to the supporting pipe, the other end of the protective belt is free, hook-and-loop fasteners are arranged at the end, connected to the supporting pipe, of the protective belt and the free end of the protective belt, and the hook-and-loop fasteners are connected to the protective belt. The skin at the focus cannot be red and swollen, postoperative rehabilitation of the focus cannot be affected, the protective belt has breathability, only the protective pad is used for protecting the operation part, other parts of the neck are exposed outside, breathability is achieved, and if itching occurs at the focus, the protective pad can be adjusted to expose the focus, so that protection is performed after the itching is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a skin protection device for radiotherapy patients. Background Art

[0002] When there is a radiotherapy lesion (or surgical site) on the neck, in order to prevent the site from being exposed to the sun and disturbed by ultraviolet rays, a sheath needs to be worn on the neck to cover the lesion.

[0003] The existing sheath is similar to a scarf or a neck cover, which is wrapped around the neck as a whole when used, resulting in poor air permeability of the neck and itchy skin. The itching causes the lesion to change from moist to red and swollen, which will affect the recovery effect of the lesion. In addition, the lesion sites of different patients are not the same, and the universal effect is poor. Manually loosening the neck cover can easily cause lesion infection. When the skin on the neck is wrinkled during wearing, it will cause discomfort to the lesion. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a skin protection device for radiotherapy patients, including a shoulder seat, a support tube is provided at one end of the shoulder seat, a mandibular seat is installed on the top of the support tube after it is bent upward, a protective belt is provided on the rear side of the support tube, an airway is opened in the middle of the protective belt, the protective belt is located above the shoulder seat, and a protective pad that can move along its length direction is provided on the protective belt, one end of the protective belt is connected to the support tube, and the other end of the protective belt is free, and Velcro is provided on one end of the protective belt connected to the support tube and the free end of the protective belt, and the free end of the protective belt is detachably connected to the support tube through the Velcro after being bent forward for one circle; the opening of the mandibular seat faces upward, and a height adjustment component is provided in the mandibular seat and the upward bending section of the support tube.

[0005] As a further preferred embodiment, the height adjustment component includes a rack extending vertically upward and the top end of which passes through the mandibular seat, and a height adjustment seat located in the mandibular seat is installed on the top of the rack. A gear assembly is provided at the detachable connection between the free end of the protective belt and the support tube, and the gear assembly includes a driving gear installed on the support tube, and also includes a driven gear installed on the free end of the protective belt; wherein, the gear assembly also includes a thin steel wire connected between the driven gear and the protective pad, and the free end of the protective belt is detachably connected to the support tube through the Velcro, and the driven gear is meshed with the driving gear.

[0006] As a further preferred embodiment, a transmission mechanism is provided in the upward curved section of the support tube, and the transmission mechanism includes a transmission shaft installed on the curved portion of the support tube through a bearing, a sleeve is fixed on the outer wall of the support tube, the inner end of the transmission shaft passes through the sleeve and enters the curved portion of the support tube, and is installed with a cylindrical gear meshing on the rack, and a pulley assembly for switching and controlling the rotation of the driven gear and the lifting and lowering of the rack is provided between the sleeve and the driving gear, and when the inner end of the transmission shaft is against the positioning assembly, the positioning assembly can position the rack for adjusting the height.

[0007] As a further preferred embodiment, the pulley assembly includes a driving pulley installed on the sleeve through a bearing, and also includes a driven pulley installed on the driving gear, and also includes a transmission belt connected between the driving pulley and the driven pulley. A pressure seat is installed at the outer end of the transmission shaft. When the pressure seat pushes the transmission shaft to move inward, the cylindrical gear at the inner end can be disengaged from the rack and the inner surface of the pressure seat can be pressed on the driving pulley. When the pressure seat drives the transmission shaft to move outward, the cylindrical gear at the inner end can be meshed with the rack again.

[0008] As a further preferred embodiment, the inner end surface of the pressure seat is provided with a rubber seat facing the outer end of the driving pulley, and the outer end of the pressure seat is a spherical surface.

[0009] As a further preference, a shoulder groove is provided at the bottom of the shoulder seat, and the shoulder groove is V-shaped with the V-shaped opening facing downward.

[0010] As a further preferred embodiment, the conveyor belt is located on the inner side of the driving gear, and the conveyor belt is also located on the inner side of the Velcro on the curved portion of the support tube.

[0011] As a further preferred embodiment, the height adjustment seat has the same shape as the mandibular seat, and the height adjustment seat is arranged in the mandibular seat in the form of an inner lining, and two sides of the height adjustment seat are in sliding contact with the inner wall surface of the mandibular seat.

[0012] As a further preferred embodiment, the mandibular seat is a mesh cover, the height-adjusting seat is a mesh seat, and the height-adjusting seat is provided with air holes which communicate with the mesh holes on the mandibular seat in upper and lower directions.

[0013] As a further preferred embodiment, two upper and lower guide members are provided on the inner side surface of the protective belt, and the upper and lower ends of the protective pad are slidably fitted on the two guide members. A hanging ring is welded on the outer side surface of the protective belt, and the thin steel wire passes through the hanging ring.

[0014] As a further preferred embodiment, the transmission mechanism also includes a positioning assembly, a hinge groove is provided on the upward curved section of the support tube, and the positioning assembly includes a positioning rod connected to the hinge groove through a torsion spring type rotating shaft, and also includes a positioning plate welded on the back of the rack, and also includes a plurality of positioning grooves provided on the positioning plate, the positioning rod is V-shaped, one end of the V-shape of the positioning rod faces downward and is located on the movement path of the transmission shaft, and the other end of the V-shape of the positioning rod faces upward and is located on the rear side of the positioning groove, when the transmission shaft carries the rubber seat to squeeze the outer end surface of the active pulley, in addition to pushing the cylindrical gear to separate from the rack, it also pushes the positioning rod to deflect upward, and makes one end of the positioning rod press against the positioning groove, so as to limit the lifting height of the rack.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. A shoulder seat and a support tube are provided, and a mandibular seat is provided on the support tube. When the device is in use, the shoulder seat is placed on the shoulder, and the mandibular seat is buckled on the chin. The shoulder seat serves as a support, so that the mandibular seat supports the chin, forcing the neck to be straightened upward, and only restricting the skin on the neck to be straightened upward. The protective belt is wrapped around the neck. In addition to protecting the lesions on the neck to reduce ultraviolet exposure, it also prevents the skin on the neck from wrinkling and deforming at the lesion due to frequent bending of the neck. The skin at the lesion will not be red and swollen, and will not affect the postoperative recovery of the lesion. The protective belt is breathable, and only the protective pad is used to protect the surgical area, while other parts of the neck are exposed to the outside to achieve breathability. If itching occurs at the lesion, the protective pad can be adjusted to expose the lesion, so that protection can be performed after the itching is relieved.

[0016] 2. The position of the protective pad can be adjusted on the protective belt. When the free end of the protective belt is buckled on the support tube through the Velcro, in addition to wrapping the neck for protection, the driven gear on the free end coincides with the bottom of the transmission shaft for adjusting the height of the mandibular seat, and meshes with the driving gear on the transmission shaft. At this time, the transmission shaft is rotated, and the driving gear is rotated by the transmission shaft, and the driven gear is rotated by the driving gear, so that the driven gear is wound around the thin steel wire, and the position of the protective pad is adjusted by the thin steel wire. This adjustment function is not only used to adjust the height of the mandibular seat, but also used to adjust the position of the protective pad. The two adjustment functions use the same adjustment mechanism, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a skin protection device for radiotherapy patients provided by an embodiment of the present invention from a front side perspective; Figure 2 A schematic diagram of a shoulder seat side of a skin protection device for radiotherapy patients provided in an embodiment of the present invention; Figure 3A schematic diagram of a partially cutaway skin protection device for a radiotherapy patient provided by an embodiment of the present invention; Figure 4 The skin protection device for radiotherapy patients provided in the embodiment of the present invention comprises Figure 3 The enlarged schematic diagram of the A part is shown; Figure 5 A schematic diagram of a skin protection device for radiotherapy patients provided by an embodiment of the present invention from the perspective of a protection belt; Figure 6 A schematic diagram of a front plan view of a skin protection device for radiotherapy patients provided in an embodiment of the present invention; Figure 7 The skin protection device for radiotherapy patients provided in the embodiment of the present invention comprises Figure 3 A schematic diagram from another perspective; Figure 8 The skin protection device for radiotherapy patients provided in the embodiment of the present invention comprises Figure 7 An enlarged schematic diagram of part B is shown.

[0018] In the figure: 1. shoulder seat; 101. shoulder groove; 2. support pipe; 21. transmission shaft; 22. cylindrical gear; 23. sleeve; 24. pulley assembly; 241. driving pulley; 242. driven pulley; 234. conveyor belt; 25. pressure seat; 251. rubber seat; 3. mandibular seat; 4. protection belt; 41. airway; 5. protection pad; 6. Velcro; 7. height adjustment assembly; 71. rack; 72. height adjustment seat; 8. gear assembly; 81. driving gear; 82. driven gear; 83. thin steel wire; 10. guide; 11. hanging ring; 12. positioning assembly; 121. positioning rod; 122. positioning plate; 123. positioning groove; 13. hinge groove. DETAILED DESCRIPTION

[0019] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0020] In one embodiment, Figure 1-Figure 8 As shown: The present embodiment provides a skin protection device for radiotherapy patients, comprising a shoulder seat 1, a support tube 2 is provided at one end of the shoulder seat 1, a mandibular seat 3 is installed on the top of the support tube 2 after being bent upward, a protective belt 4 is provided on the rear side of the support tube 2, an airway 41 is opened in the middle of the protective belt 4, the protective belt 4 is located above the shoulder seat 1, a protective pad 5 that can move along its length direction is provided on the protective belt 4, one end of the protective belt 4 is connected to the support tube 2, and the other end of the protective belt 4 is free, and Velcro 6 is provided on one end of the protective belt 4 connected to the support tube 2 and the free end of the protective belt 4, and the free end of the protective belt 4 is detachably connected to the support tube 2 through the Velcro 6 after being bent forward for one circle; The opening of the mandibular seat 3 faces upward, and a height adjustment component 7 is provided in the upward bending section of the mandibular seat 3 and the support tube 2. The height adjustment component 7 includes a rack 71 that is vertically upward and the top end of which passes into the mandibular seat 3. The top end of the rack 71 is installed with a height adjustment seat 72 located in the mandibular seat 3. The shape of the height adjustment seat 72 is consistent with that of the mandibular seat 3, and the height adjustment seat 72 is arranged in the mandibular seat 3 in the form of an inner lining. Both sides of the height adjustment seat 72 are in sliding contact with the inner wall surface of the mandibular seat 3. A gear assembly 8 is provided at the detachable connection between the free end of the protective belt 4 and the support tube 2. The gear assembly 8 includes a driving gear 81 installed on the support tube 2, and also includes a driven gear 82 installed on the free end of the protective belt 4; The gear assembly 8 further includes a thin steel wire 83 connected between the driven gear 82 and the protective pad 5. The free end of the protective belt 4 is detachably connected to the support tube 2 through the Velcro 6, and the driven gear 82 is meshed with the driving gear 81. A transmission mechanism is provided in the upward curved section of the support tube 2, and the transmission mechanism includes a transmission shaft 21 mounted on the curved portion of the support tube 2 through a bearing, a sleeve 23 is fixed to the outer wall of the support tube 2, the inner end of the transmission shaft 21 passes through the sleeve 23 and enters the curved portion of the support tube 2, and is installed with a cylindrical gear 22 meshing on the rack 71, and a pulley assembly 24 for switching and controlling the rotation of the driven gear 82 and the lifting and lowering of the rack 71 is provided between the sleeve 23 and the driving gear 81. The pulley assembly 24 includes a driving pulley 241 installed on the sleeve 23 through a bearing, a driven pulley 242 installed on the driving gear 81, and a transmission belt 243 connected between the driving pulley 241 and the driven pulley 242. A pressure seat 25 is installed at the outer end of the transmission shaft 21. When the pressure seat 25 pushes the transmission shaft 21 to move inward, the cylindrical gear 22 at the inner end can be disengaged from the rack 71, and the inner surface of the pressure seat 25 can be pressed on the driving pulley 241. When the pressure seat 25 drives the transmission shaft 21 to move outward, the cylindrical gear 22 at the inner end can be meshed with the rack 71 again.

[0021] When in use, the shoulder seat 1 is buckled on the patient's shoulder through the shoulder slot 101, at this time, the support tube 2 is forward, and the mandibular seat 3 reaches the bottom of the mandible, the mandible falls on the mandibular seat 3, and is supported by the height adjustment seat 72. The height adjustment seat 72 and the mandibular seat 3 are both breathable. For example, the mandibular seat 3 is a mesh cover, and the height adjustment seat 72 is a mesh seat. The height adjustment seat 72 is provided with air holes that communicate with the mesh holes on the mandibular seat 3 from top to bottom. In this way, the mandible is supported while its air permeability is not affected. The mandible will not itch or become red and swollen due to lack of air permeability. In addition to this air permeability The transmission shaft 21 is rotated by the outer end, and the transmission shaft 21 drives the cylindrical gear 22 to rotate. The cylindrical gear 22 meshes with the rack 71 to make the rack 71 rise, and the top of the rack 71 drives the height adjustment seat 72 to rise, and the height adjustment seat 72 pushes the patient's lower jaw to rise, and the lower jaw drives the neck to rise, forcing the patient to stop bowing his head excessively. At this time, the skin on the neck will not wrinkle due to the patient's excessive bowing of his head, and the lesions on the skin or the skin at the lesions will not become red and swollen due to skin wrinkles, and the redness and swelling will not affect the postoperative recovery of the lesions.

[0022] It needs to be further explained that if Figure 4 As shown, a solid part is provided in the support tube 2, and the rack 71 is arranged in the support tube 2 by means of a slide rail insertion. That is to say, the rack 71 is not suspended in the support tube 2, but is positioned by means of a slide rail insertion. When the transmission shaft 21 rotates in the reverse direction, the rack 71 and the height adjustment seat 72 are smoothly lowered through the above-mentioned reverse transmission relationship.

[0023] When in use, in addition to adjusting and limiting the patient's mandibular height through the above-mentioned adjustment method, the patient can also wrap the protective belt 4 around the neck for a week, and then detachably connect the free end of the protective belt 4 to the support tube 2 through the Velcro 6. At this time, since the protective belt 4 is wrapped around the neck, it is equivalent to using the protective belt 4 to assist the height adjustment seat 72 in supporting the mandibular, and further supporting the neck. In addition, at this time, the driven gear 82 on the free end of the protective belt 4 is meshed with the driving gear 81, and then pressing The pressure seat 25 pushes the transmission shaft 21 with force, causing the transmission shaft 21 to move inward, and the inner end of the transmission shaft 21 pushes the cylindrical gear 22 to move inward, causing the cylindrical gear 22 to disengage from the rack 71. The inner surface of the pressure seat 25 is pressed on the active pulley 241 through the rubber seat 251. At the same time, the inner end of the transmission shaft 21 quickly presses against the positioning assembly 12, and the positioning assembly 12 is actuated to position the rack 71 after height adjustment. The height adjustment seat 72 at the top of the rack 71 will not fall freely, but will still press against the lower jaw, so that the neck is continuously restricted. At this time, the operating press seat 25 drives the transmission shaft 21 to rotate, and the transmission shaft 21 drives the cylindrical gear 22 to rotate. At this time, since the cylindrical gear 22 is separated from the rack 71, the transmission shaft 21 will not be related to the rack 71 when it rotates. Since the rubber seat 251 on the inner surface of the press seat 25 is pressed on the active pulley 241, when the press seat 25 drives the transmission shaft 21 to rotate, it will also rotate against the active pulley 241. The active pulley 241 drives the driven pulley 242 to rotate through the conveyor belt 243, and the driven pulley 242 drives the driving gear 81 to rotate, and the driving gear 81 drives the driven gear 82 to rotate. The driven gear 82 rotates with the winding wheel, and the winding wheel winds the thin steel wire 83, the thin steel wire 83 is tightened, and the protective pad 5 is dragged while being tightened, so that the position of the protective pad 5 on the protective belt 4 is adjusted. Since the protective belt 4 has been tied to the neck at this time, the protective pad 5 is equivalent to protecting the lesion after the position of the neck is adjusted. This adjustment method can meet the adjustment needs of different lesions of the patient. Due to the meshing relationship between the gears, the position of the protective pad 5 is adjusted, thereby avoiding fingers touching the protective pad 5, preventing fingers from infecting the protective pad 5, and avoiding the protective pad 5 from infecting the lesion, and the operation method is more reasonable.

[0024] Since the driven gear 82 is installed with the protective belt 4, it can mesh with the driving gear 81 only when the free end of the protective belt 4 is docked on the support tube 2. Therefore, when cleaning the device, the free end of the protective belt 4 is removed from the support tube 2, and the driven gear 82 is also separated from the driving gear 81, so that the two gears are easy to be thoroughly rinsed, and the flushing efficiency will not be affected by meshing together. At the same time, since the driving gear 81 is located below the mandibular seat 3, this area is also located below the oral cavity. Since the two gears can be rinsed separately, the contamination of the respiratory area by bacteria between the gear meshing surfaces can be reduced when they are meshed again. There is no need to manually loosen the neck cover, and there is no need to manually wipe the meshing surface between the two gears.

[0025] The structure of the positioning component 12 is as follows: Figure 4 , Figure 8 As shown, a hinge groove 13 is provided on the upward curved section of the support tube 2, and the hinge groove 13 is located at the rear side of the transmission shaft 21 and the rack 71. The positioning assembly 12 includes a positioning rod 121 connected to the hinge groove 13 through a torsion spring type rotating shaft, and also includes a positioning plate 122 welded on the rear of the rack 71, and also includes a plurality of positioning grooves 123 provided on the positioning plate 122. The positioning rod 121 is V-shaped, and one end of the V-shape of the positioning rod 121 faces downward and is located on the movement path of the transmission shaft 21, and the other end of the V-shape of the positioning rod 121 faces upward and is located at the rear side of the positioning groove 123. When the transmission shaft 21 is squeezed on the outer end surface of the active pulley 241 with the rubber seat 251, in addition to pushing the cylindrical gear 22 to separate from the rack 71, it also pushes the positioning rod 121 to deflect upward, and makes one end of the positioning rod 121 press against the positioning groove 123 to limit the lifting height of the rack 71. When the pressing seat 25 is pressed to push the transmission shaft 21 backward and the rubber seat 251 is pressed on the driving pulley 241, the rear end of the transmission shaft 21 not only takes the cylindrical gear 22 away from the rack 71, but also instantly hits the V-shaped bottom end of the positioning rod 121 and pushes the bottom end of the positioning rod 121 to deflect downward. At this time, the V-shaped top end of the positioning rod 121 deflects downward and presses Figure 8 The positioning plate 122 is positioned by the positioning groove 123, and the heightened rack 71 is positioned by the positioning plate 122. Since the positioning rod 121 is connected to the hinge groove 13 through a torsion spring shaft, the torsion spring is sleeved on the shaft, one free end of the torsion spring is pressed against the V-shaped top of the positioning rod 121, and the other free end of the torsion spring is pressed against the lumen surface of the support tube 2. This use of the torsion spring is a prior art and will not be described in detail. In short, when the rear end of the transmission shaft 21 does not hit the bottom end of the positioning rod 121, the top end of the positioning rod 121 is away from the positioning groove 123. When the rear end of the transmission shaft 21 hits the bottom end of the positioning rod 121, the positioning rod 121 will deflect and the top end will be stuck in the positioning groove 123 to prevent the heightened rack 71 from falling freely.

[0026] like Figure 2 As shown, the conveyor belt 243 is located on the inner side of the driving gear 81, and the conveyor belt 243 is also located on the inner side of the Velcro 6 on the curved portion of the support tube 2. The conveyor belt 243 will not be rubbed by the driving gear 81, and secondly, when the free end of the protective belt 4 is attached to the support tube 2, the driven gear 82 will not rub against the conveyor belt 243.

[0027] Two upper and lower guide members 10 are provided on the inner side of the protective belt 4, and the upper and lower ends of the protective pad 5 are slidably fitted on the two guide members 10. A hanging ring 11 is welded on the outer side of the protective belt 4, and the thin steel wire 83 passes through the hanging ring 11. The two guide members 10 are not only used to guide the protective pad 5 steadily when the position of the protective pad 5 is adjusted, but also used to install the protective pad 5 on the protective belt 4. The protective belt 4 is provided with an airway 41. The provision of the airway 41 adjusts the protective pad 5 to the lesion, and only forms a local protective effect on the lesion area, while the non-lesion area of ​​the neck is still exposed to the atmosphere through the airway 41 to achieve ventilation, thereby improving comfort. Of course, when the lesion area is covered by the protective pad 5 for a long time and itchy occurs, the pressure seat 25 is pinched and rotated with the transmission shaft 21 to wind the thin steel wire 83 and tighten it, and the protective pad 5 is dragged while tightening it, so that the protective pad 5 is adjusted to a new position along the protective belt 4, and the lesion is temporarily exposed for ventilation. This adjustment method is based on the meshing relationship between the gears, so that the position of the protective pad 5 is adjusted, thereby preventing fingers from touching the protective pad 5, preventing fingers from infecting the protective pad 5, and preventing the protective pad 5 from infecting the lesion, and the operation method is more reasonable.

[0028] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0029] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A skin protection device for radiotherapy patients, characterized in that: The invention comprises a shoulder seat (1), one end of which is provided with a support tube (2), a mandibular seat (3) is installed on the top of the support tube (2) after being bent upward, a protective belt (4) is provided on the rear side of the support tube (2), an air passage (41) is opened in the middle of the protective belt (4), the protective belt (4) is located above the shoulder seat (1), a protective pad (5) which can move along its length direction is provided on the protective belt (4), one end of the protective belt (4) is connected to the support tube (2), and the other end of the protective belt (4) is free, the end of the protective belt (4) connected to the support tube (2) and the free end of the protective belt (4) are both provided with Velcro (6), and the free end of the protective belt (4) is detachably connected to the support tube (2) through the Velcro (6) after being bent forward for one circle; the opening of the mandibular seat (3) faces upward, and a height adjustment component (7) is provided in the upward bending section of the mandibular seat (3) and the support tube (2).

2. The skin protection device for radiotherapy patients according to claim 1, characterized in that: The height adjustment component (7) comprises a rack (71) which is vertically upward and the top end of which passes through the mandibular seat (3); the top end of the rack (71) is equipped with a height adjustment seat (72) located in the mandibular seat (3); a gear component (8) is provided at the detachable connection between the free end of the protective belt (4) and the support tube (2); the gear component (8) comprises a driving gear (81) mounted on the support tube (2) and a driven gear (82) mounted on the free end of the protective belt (4); the gear component (8) also comprises a thin steel wire (83) connected between the driven gear (82) and the protective pad (5); the free end of the protective belt (4) is detachably connected to the support tube (2) through the Velcro (6), and the driven gear (82) is meshed with the driving gear (81).

3. The skin protection device for radiotherapy patients according to claim 2, characterized in that: A transmission mechanism is provided in the upward curved section of the support tube (2), the transmission mechanism comprising a transmission shaft (21) mounted on the curved portion of the support tube (2) via a bearing, a sleeve (23) fixed on the outer wall of the support tube (2), the inner end of the transmission shaft (21) passes through the sleeve (23) and enters the curved portion of the support tube (2), and is provided with a cylindrical gear (22) meshed with the rack (71), a pulley assembly (24) for switching and controlling the rotation of the driven gear (82) and the lifting and lowering of the rack (71) is provided between the sleeve (23) and the driving gear (81), and the transmission mechanism further comprises a positioning assembly (12), and when the inner end of the transmission shaft (21) is pressed against the positioning assembly (12), the positioning assembly (12) can position the height-adjusting rack (71).

4. The skin protection device for radiotherapy patients according to claim 1, characterized in that: The pulley assembly (24) includes a driving pulley (241) mounted on the sleeve (23) via a bearing, and also includes a driven pulley (242) mounted on the driving gear (81), and also includes a transmission belt (243) connected between the driving pulley (241) and the driven pulley (242). A pressure seat (25) is installed at the outer end of the transmission shaft (21). When the pressure seat (25) pushes the transmission shaft (21) to move inward, the cylindrical gear (22) at the inner end can be disengaged from the rack (71), and the inner surface of the pressure seat (25) can be pressed on the driving pulley (241). When the pressure seat (25) drives the transmission shaft (21) to move outward, the cylindrical gear (22) at the inner end can be meshed with the rack (71) again.

5. The skin protection device for radiotherapy patients according to claim 4, characterized in that: The inner end surface of the pressure seat (25) is provided with a rubber seat (251) facing the outer end of the driving pulley (241), and the outer end of the pressure seat (25) is a spherical surface.

6. The skin protection device for radiotherapy patients according to claim 5, characterized in that: The conveyor belt (243) is located on the inner side of the driving gear (81), and the conveyor belt (243) is also located on the inner side of the Velcro (6) on the curved portion of the support tube (2).

7. The skin protection device for radiotherapy patients according to claim 6, characterized in that: The height adjustment seat (72) has a shape consistent with that of the mandibular seat (3), and the height adjustment seat (72) is arranged in the mandibular seat (3) in the form of an inner lining, and both sides of the height adjustment seat (72) are in sliding contact with the inner wall surface of the mandibular seat (3).

8. The skin protection device for radiotherapy patients according to claim 7, characterized in that: The mandibular seat (3) is a mesh cover, the height adjustment seat (72) is a mesh seat, and the height adjustment seat (72) is provided with air holes that communicate with the mesh holes on the mandibular seat (3) from top to bottom.

9. The skin protection device for radiotherapy patients according to claim 1, characterized in that: The inner side surface of the protective belt (4) is provided with two upper and lower guide members (10), and the upper and lower ends of the protective pad (5) are slidably fitted on the two guide members (10). A hanging ring (11) is welded on the outer side surface of the protective belt (4), and the thin steel wire (83) passes through the hanging ring (11).

10. The skin protection device for radiotherapy patients according to claim 9, characterized in that: The upwardly curved section of the support tube (2) is provided with an articulated groove (13), which is located at the rear side of the transmission shaft (21) and the rack (71). The positioning assembly (12) includes a positioning rod (121) connected to the articulated groove (13) via a torsion spring-type rotating shaft, a positioning plate (122) welded to the rear of the rack (71), and a plurality of positioning grooves (123) provided on the positioning plate (122). The positioning rod (121) is V-shaped, and one end of the V-shaped positioning rod (121) faces downward and is located On the moving route of the transmission shaft (21), the other end of the V-shaped positioning rod (121) faces upward and is located at the rear side of the positioning groove (123). When the transmission shaft (21) carries the rubber seat (251) and is pressed against the outer end surface of the driving pulley (241), in addition to pushing the cylindrical gear (22) to separate from the rack (71), it also pushes the positioning rod (121) to deflect upward and makes one end of the positioning rod (121) press against the positioning groove (123) to limit the lifting height of the rack (71).

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