Radiotherapy auxiliary positioning device

Abstract

The utility model belongs to the technical field of radiotherapy auxiliary equipment, and particularly relates to a radiotherapy auxiliary positioning device which comprises a positioning pad, the positioning pad comprises a first shaping part, a connecting part and a second shaping part, the connecting part is connected between the first shaping part and the second shaping part, the first shaping part is provided with a first cavity, the connecting part is provided with a communicating cavity, and the communicating cavity is communicated with the first cavity. The first shaping part is provided with a first cavity, the communicating cavity is communicated with the first cavity, the second shaping part is provided with a second cavity, the second cavity is communicated with the communicating cavity, the second shaping part is provided with an air exhaust connector, the air exhaust connector is communicated with the second cavity, and when air is exhausted through the air exhaust connector, the positioning pad is tightened and used for shaping and positioning the upper body. Therefore, the first shaping part and the second shaping part can be gradually shrunk to be attached to the upper body and are shifted to be more attached to the upper body of the human body to complete positioning, the covering area is further increased, the positioning accuracy of the upper body of the user is improved, and the positioning effect is better.

Description

Technical Field

[0001] The present technical solution relates to the technical field of radiotherapy auxiliary equipment, and in particular to a radiotherapy auxiliary positioning device. Background Art

[0002] Radiotherapy positioning equipment is a key device in the radiotherapy process. It is used to determine the exact location of tumors or other lesions, ensuring that radiation can be accurately irradiated to the target area while minimizing damage to surrounding normal tissues.

[0003] For example, a breast support with patent publication number CN204233145U includes a support plate, a gripper installed on the upper end of the support plate, and a vacuum fixing pad installed on the support plate, wherein the vacuum fixing pad includes an airtight outer layer and filling particles filled in the airtight outer layer, and the airtight outer layer is also provided with an exhaust pipe for vacuuming; the vacuum fixing pad is installed on the upper end of the support plate, located below the gripper, and the airtight outer layer is also provided with an exhaust pipe for vacuuming.

[0004] When in use, first let the patient lie on the pallet, lie on the vacuum fixation pad above the chest, and hold the gripper. At this time, the vacuum fixation pad will produce a depression under the pressure of the patient's head and shoulders. At this time, the vacuum fixation pad is evacuated through the vacuum tube. The filling particles will form a fixed-shape depression matching the shape of the patient's head and shoulders under the pressure of the airtight outer layer, and then the vacuum tube can be closed.

[0005] In the above-mentioned breast support, the vacuum fixing pad is depressed by the pressure of the patient's head and shoulders. The depression matching the contour of the human body does not wrap the upper body well and there is a positioning deviation, resulting in a poor positioning effect, which needs to be improved. Utility Model Content

[0006] In order to improve the problem that some depressions do not wrap well around the human body and have poor positioning effects, this technical solution provides a radiotherapy auxiliary positioning device.

[0007] The purpose of this technical solution is achieved in this way:

[0008] A radiotherapy auxiliary positioning device includes a positioning pad, the positioning pad includes a first shaping portion, a connecting portion and a second shaping portion, the connecting portion is connected between the first shaping portion and the second shaping portion, the width of the connecting portion along a direction perpendicular to the distribution direction is smaller than the first shaping portion and the second shaping portion, the first shaping portion is provided with a first cavity, the connecting portion is provided with a connecting cavity, the connecting cavity is connected to the first cavity, the second shaping portion is provided with a second cavity, the second cavity is connected to the connecting cavity, the first cavity, the second cavity and the connecting cavity contain filling material, the second shaping portion is provided with an exhaust joint, the exhaust joint is connected to the second cavity, when air is exhausted through the exhaust joint, the positioning pad presses the filling material to shape and position the upper body.

[0009] Through the above technical solution, when the radiotherapy auxiliary positioning device is used normally, the positioning pad is formed with three parts: a first shaping part, a connecting part and a second shaping part. The first chamber, the second chamber and the connecting chamber are filled with fillers, and the fillers are dispersed. The shape of the upper end surface of the positioning pad matches the upper body. The user lies on the positioning pad and maintains a fixed posture. The air in the first chamber, the second chamber and the connecting chamber is extracted through the vacuum joint. The positioning pad is deformed as a whole and the internal fillers are compressed, so that the first shaping part and the second shaping part will gradually shrink to the extent of being close to the upper body, and are adjusted to fit different parts of the upper body of the human body to complete the positioning, so that the fit to the human body is better, thereby increasing the covering area, improving the accuracy of positioning the user's upper body, and achieving a better positioning effect.

[0010] Preferably, the inner wall of the positioning pad has an inner lining layer, and the end surface of the inner lining layer facing the first chamber, the connecting chamber and the second chamber has a friction surface.

[0011] Through the above technical solution, the inner lining layer of the positioning pad enhances structural strength and durability, and the friction surface faces the filler so that the friction between the two is greater, which reduces the displacement and accumulation of the filler during vacuuming, improves the positioning accuracy of the filler, and thus more effectively achieves shaping positioning.

[0012] Preferably, a partition net is provided in the communicating cavity, and the partition net is fixed between the communicating cavity and the first cavity and the second cavity on both sides to limit the passage of fillers.

[0013] Through the above technical solution, the partition net is fixed at the connection between the connecting cavity and the first chamber, and is fixed at the connection between the connecting cavity and the second chamber. The partition net has a mesh structure to prevent the sealing of the first molding portion from affecting the airflow. The channel cross-section of the mesh holes of the partition net is smaller than the cross-sectional area of ​​the filler. The partition net limits the filler in the first chamber from entering the connecting cavity, and the partition net limits the filler in the connecting cavity from entering the second chamber. When vacuuming, the partition net blocks the filler from moving between the first molding portion and the second molding portion due to the airflow, thereby making the shaping of the positioning pad more uniform and accurate.

[0014] Preferably, the positioning pad is provided with a sealing connecting pipe, and the sealing connecting pipe corresponds to the vacuum joint and is located at an end away from the first shaping portion. The sealing connecting pipe has a connecting end, and the vacuum joint is provided with an air vent, which is connected to the second chamber. The connecting end is embedded in the air vent and threadedly connected to achieve sealing.

[0015] Through the above technical solution, a sealing pipe is installed at the vacuum joint. The outer peripheral wall of the connecting end of the sealing pipe and the inner peripheral wall of the air hole of the vacuum joint have a matching threaded structure, so that the vacuum joint can be threadedly connected with the sealing pipe to achieve sealing. The sealing pipe is arranged on the lower end surface of the second molding part to avoid falling off due to external force factors during use and affecting the sealing effect, thereby improving the connection stability.

[0016] Preferably, the sealing pipe is penetrated by an air guide channel, the air guide channel is in communication with the vent hole, the air guide channel comprises a tapered section and an air extraction section, the tapered section is gradually expanded toward the through end close to the air extraction section, a piston is slidably connected in the air guide channel, an elastic member is connected between the piston member and the inner wall of the air guide channel, and the elastic force of the elastic member is used to seal the piston member in the tapered section;

[0017] When the sealed pipe is evacuated, the piston overcomes the elastic force of the elastic member to allow the tapered section to be conductive to achieve evacuation; when the evacuation stops, the piston blocks the tapered section under the elastic force of the elastic member to achieve sealing.

[0018] Through the above technical scheme, the sealing connecting pipe is connected to the air extraction joint, the air guide channel is connected to the air extraction joint, the piston is connected to the elastic part, the elastic part guides and controls the sliding range of the piston, when the sealing connecting pipe is evacuated, the piston overcomes the elastic force of the elastic part and moves to the large end of the tapered section of the air guide channel, and a gap is left between the piston and the inner wall of the tapered section for gas to flow. When the air extraction stops, the piston slides to the small end of the tapered section under the action of the elastic force of the elastic part and the influence of the air pressure difference, and the piston clings to the inner wall of the tapered section to achieve sealing, effectively preventing gas backflow or leakage, improving air tightness, and simple operation.

[0019] Preferably, the piston member is provided with a sealing ring, the sealing ring is sleeved on the piston member, the piston member is provided with an annular groove corresponding to the sealing ring, and the sealing ring is embedded in the annular groove to press against the inner wall of the tapered section.

[0020] Through the above technical solution, the sealing ring is sleeved on the outer peripheral wall of the piston member, the size and shape of the sealing ring are matched with the annular groove of the piston member, and the sealing ring is embedded in the annular groove so that the sealing ring can be tightly pressed against the bottom of the annular groove and the inner wall of the air guide channel, further preventing gas leakage and further improving the sealing effect.

[0021] Preferably, the sealing connecting pipe is provided with an end cover, and the end cover is used to cover the through end of the air extraction section. The sealing connecting pipe sleeve is provided with a sealing ring, and the sealing ring is tightly pressed between the end cover and the side wall of one end of the sealing connecting pipe.

[0022] Through the above technical solution, a sealing ring is provided in the sealing pipe sleeve, and the end cover is used to cover the through end of the air extraction section to prevent dust or other pollutants from entering the air guide channel. The sealing ring is tightly pressed between the end cover and the side wall of one end of the sealing pipe to further improve the sealing of the air guide channel.

[0023] Preferably, the first shaping portion has a head supporting portion, and the head supporting portion is used for supporting the head.

[0024] Through the above technical solution, a head support area is added to the positioning pad to provide an area for the head to rest on, so that the user's head can be effectively supported and fixed, thereby improving the use comfort and positioning accuracy.

[0025] Preferably, the positioning pad is provided with positioning strips, the positioning strips extend to both sides of the lower end surface of the positioning pad, the positioning strips are provided with positioning holes, and the positioning holes are used for bolts to pass through for disassembly and assembly.

[0026] Through the above technical solution, the two ends of the positioning bar protrude and extend on both sides of the positioning pad, so that the positioning pad is stably placed on the horizontal plane. The positioning bar contacts the plane, and the bolts pass through the connecting holes of the positioning bar and are threaded to the plane, so that the positioning pad is bolted and fixed, reducing the swinging displacement caused by external force during use and maintaining relative stability, thereby improving the stability of the positioning pad installation and the accuracy of positioning.

[0027] Compared with the prior art, the technical solution has the following outstanding and beneficial technical effects:

[0028] 1. The technical solution provides an air extraction joint on the positioning pad, and the positioning pad is sequentially formed with a first shaping part, a connecting part and a second shaping part. The air is extracted through the air extraction joint, and the first shaping part and the second shaping part gradually shrink and fit against the upper body of the human body and adjust different parts to further achieve positioning, thereby increasing the covering area, improving the accuracy of positioning the upper body of the user, and achieving a better positioning effect;

[0029] 2. This technical solution provides an inner lining layer on the positioning pad, and the end surface of the inner lining layer facing the first chamber, the connecting chamber and the second chamber has a friction surface, and the friction surface contacts the filler to increase the friction between the filler and the inner lining layer, thereby reducing the accumulation or displacement of the filler during air extraction and improving the accuracy of positioning;

[0030] 3. This technical solution connects the air extraction joint with the sealing pipe threadedly, the air guide channel is connected with the vent hole, the piston is connected with an elastic part, the piston overcomes the elastic force of the elastic part and slides along the tapered section of the air guide channel, the piston realizes the circulation and sealing of the air guide channel, the operation is simple, and the gas backflow or leakage is effectively prevented, thereby improving the air tightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0032] Figure 2 It is a partial cross-sectional schematic diagram of this embodiment;

[0033] Figure 3 It is a partial cross-sectional schematic diagram of the air extraction joint and the sealing connecting pipe in this embodiment;

[0034] Figure 4 For this embodiment Figure 3 Another partial cross-sectional schematic diagram.

[0035] Figure numerals: 1. positioning pad; 11. first shaping portion; 12. connecting portion; 13. second shaping portion; 2. first chamber; 3. connecting chamber; 4. second chamber; 5. exhaust joint; 6. lining layer; 7. friction surface; 8. partition net; 9. sealing connecting pipe; 10. connecting end; 14. vent hole; 15. air guide channel; 151. tapered section; 152. exhaust section; 16. piston member; 17. elastic member; 18. sealing ring; 19. ring groove; 20. end cover; 21. sealing ring; 22. head support portion; 23. positioning strip; 24. positioning hole. DETAILED DESCRIPTION

[0036] The specific implementation of the technical solution is further described in detail below with reference to the accompanying drawings.

[0037] Example:

[0038] See also Figure 1 and Figure 2A radiotherapy auxiliary positioning device includes a positioning pad 1, which is distributed with three parts in sequence. The three parts are correspondingly formed with a first shaping part 11, a connecting part 12 and a second shaping part 13. The connecting part 12 is located between the first shaping part 11 and the second shaping part 13. The width of the connecting part 12 along the distribution direction is smaller than the first shaping part 11 and the second shaping part 13. One side of the connecting part 12 is connected to the first shaping part 11, and the other side of the connecting part 12 is connected to the second shaping part 13. In this example, the first shaping part 11 is provided for the chest area to rest on, and the second shaping part 13 is provided for the waist and abdomen area to rest on. The first shaping part 11 has a head supporting part 22, which is arranged on the upper end surface of the first shaping part 11. The head supporting part 22 is located at a position where the first shaping part 11 is relatively far away from the second shaping part 13, and the head supporting part 22 is provided for the head to rest on.

[0039] The positioning pad 1 is provided with a positioning strip 23, which is located between the first shaping portion 11 and the second shaping portion 13. The two ends of the positioning strip 23 protrude and extend on both sides of the positioning pad 1 along the width direction. The positioning strip 23 is fixedly connected to the lower end surface of the positioning pad 1. The positioning strip 23 is provided with a positioning hole 24. There are two positioning holes 24, which are respectively located at the two ends of the positioning strip 23. The two positioning holes 24 pass through the corresponding end surfaces, and the positioning pad 1 is fixedly installed on the plane by passing bolts through the two positioning holes 24.

[0040] The first shaping portion 11 is provided with a first chamber 2, in which fillers are dispersedly distributed; the connecting portion 12 is provided with a connecting chamber 3, in which fillers are dispersedly distributed, and the connecting chamber 3 is correspondingly connected to the first chamber 2; the second shaping portion 13 is provided with a second chamber 4, and the second chamber 4 is correspondingly connected to the connecting chamber 3; the positioning pad 1 has an inner lining layer 6, and the inner lining layer 6 is arranged on the inner wall inside the positioning pad 1; the end faces of the inner lining layer 6 facing the first chamber 2, the connecting chamber 3 and the second chamber 4 all have friction surfaces 7, and the friction surface 7 is in contact with the fillers; the fabric of the friction surface 7 can be made of silicone anti-slip fabric or rubber anti-slip particles or cotton and linen blended fabric, and the friction surface 7 is used to increase the friction between the fillers.

[0041] A partition net 8 is provided in the connecting cavity 3, and two partition nets 8 are provided, wherein one partition net 8 is fixed between the connecting cavity 3 and the first chamber 2, and the other partition net 8 is fixedly connected between the connecting cavity 3 and the second chamber 4. The size of the partition net 8 is adapted to the channel cross-sectional size of the connecting cavity 3. In this example, the partition net 8 has a mesh through-hole structure, and the channel cross-section of the mesh structure of the partition net 8 is smaller than the cross-sectional area of ​​each filler, and the partition net 8 is used to limit the passage of the filler.

[0042] The second shaping portion 13 is provided with an air extraction connector 5 , which is located at the lower end surface of the second shaping portion 13 away from the first shaping portion 11 , and the air extraction connector 5 protrudes from the corresponding end surface and extends downward.

[0043] See also Figure 3 and Figure 4 The exhaust joint 5 is provided with a vent hole 14, which passes through the exhaust joint 5 in the depth direction, and the vent hole 14 is connected to the second chamber 4. The positioning pad 1 is provided with a sealing pipe 9, and the sealing pipe 9 is arranged corresponding to the position of the exhaust joint 5, and is cut and fixed to the end surface of the lower side of the second shaping portion 13. The sealing pipe 9 has a connecting end 10, and the connecting end 10 is located on a side of the sealing pipe 9 corresponding to the vent hole 14, and the connecting end 10 is embedded in the vent hole 14. The sealing pipe 9 is threadedly connected to the exhaust joint 5. The specific threaded connection method can be that the outer peripheral wall of the connecting end 10 and the inner peripheral wall of the vent hole 14 both have a threaded structure, and the threaded structure is adapted to realize the threaded connection.

[0044] The sealing pipe 9 is provided with an air guiding channel 15, which runs through the sealing pipe 9 in the length direction. One end of the air guiding channel 15 passes through the connecting portion 12 and is communicated with the air vent 14, and the other end of the air guiding channel 15 passes through the outside of the sealing pipe 9. The air guiding channel 15 includes a tapered section 151 and an air extraction section 152. The tapered section 151 is gradually expanded toward the direction close to the through end of the air extraction section 152. A piston member 16 is provided in the air guiding channel 15. The piston member 16 is slidably connected in the air guiding channel 15. The piston member 16 slides along the through direction of the tapered section 151. An elastic member 17 is fixedly connected between the piston member 16 and the inner wall of the air guiding channel 15. The elastic member 17 can be a reset spring. The elastic member 17 is located on the side of the piston member 16 close to the connecting end 10.

[0045] The piston member 16 is provided with an annular groove 19, which is circumferentially arranged on the outer peripheral wall of the piston member 16 corresponding to the sliding direction of the piston member 16. The piston member 16 is provided with a sealing ring 18, which is sleeved on the outer periphery of the piston member 16, and the sealing ring 18 is adapted to the annular groove 19, and the sealing ring 18 is correspondingly embedded in the annular groove 19. When the sealing connecting pipe 9 is evacuated, the piston member 16 overcomes the elastic force of the spring and slides to the large end of the tapered section 151. The cross-sectional area of ​​the piston member 16 is smaller than the channel cross-sectional area of ​​the large end of the tapered section. A gap is left between the piston member 16 and the large end of the tapered section 151. When the air extraction stops, the piston member 16 slides to the small end of the tapered section 151 under the elastic pulling force of the elastic member 17, and due to the air pressure difference, the sealing ring 18 presses against the bottom of the annular groove 19 and the inner wall of the tapered section 151 to seal the tapered section 151 to achieve sealing.

[0046] The sealing connecting pipe 9 is provided with a sealing ring 21, which is located at the end of the sealing connecting pipe 9 away from the connecting end 10. The sealing connecting pipe 9 is provided with an end cover 20, which is arranged on the side of the sealing connecting pipe 9 away from the exhaust joint 5. The end cover 20 is threadedly connected to the sealing connecting pipe 9, and the sealing ring 21 is tightly pressed between the end cover 20 and the side wall of one end of the sealing connecting pipe 9.

[0047] The specific working process of this program is as follows:

[0048] The technical solution is that the positioning pad 1 is formed with a first shaping portion 11, a connecting portion 12 and a second shaping portion 13. The first chamber 2, the second chamber 4 and the connecting chamber 3 are filled with fillers, and the fillers are dispersed. The shape of the upper end surface of the positioning pad 1 matches the upper body. The user lies on the positioning pad 1 and maintains a fixed posture. The air extraction joint 5 is threadedly connected to the sealing pipe 9, and the sealing pipe 9 is evacuated. The piston member 16 overcomes the elastic force of the elastic member 17 to make the tapered section 151 conductive to achieve air extraction. The air is extracted along the vent hole 14 and the air guide channel 15. The positioning pad 1 is deformed as a whole, and the friction surface 7 of the lining layer 6 presses the fillers, so that the first shaping portion 11 and the second shaping portion 13 will gradually shrink to the extent of being close to the upper body, and are moved to more closely fit the upper body of the human body to complete the positioning, thereby improving the accuracy of the positioning of the user's upper body, so that the positioning effect is better.

[0049] The above shows and describes the basic principle and main features of the technical solution and the advantages of the technical solution. The technicians in this industry should understand that the technical solution is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, which fall within the scope of the technical solution to be protected. The scope of protection claimed by the technical solution is defined by the attached claims and their equivalents.

Claims

1. A radiotherapy auxiliary positioning device, comprising a positioning pad (1), characterized in that: The positioning pad (1) comprises a first shaping portion (11), a connecting portion (12) and a second shaping portion (13); the connecting portion (12) is connected between the first shaping portion (11) and the second shaping portion (13); the width of the connecting portion (12) along a direction perpendicular to the distribution direction is smaller than that of the first shaping portion (11) and the second shaping portion (13); the first shaping portion (11) is provided with a first chamber (2); the connecting portion (12) is provided with a connecting cavity (3); the connecting cavity (3) The second shaping portion (13) is connected to the first chamber (2); the second chamber (4) is provided with a second chamber (4); the second chamber (4) is connected to the connecting chamber (3); the first chamber (2), the second chamber (4) and the connecting chamber (3) contain filling material; the second shaping portion (13) is provided with an air suction joint (5); the air suction joint (5) is connected to the second chamber (4); when air is sucked through the air suction joint (5), the positioning pad (1) presses the filling material to shape and position the upper body.

2. The radiotherapy auxiliary positioning device according to claim 1, characterized in that: The inner wall of the positioning pad (1) has an inner lining layer (6), and the end surface of the inner lining layer (6) facing the first chamber (2), the connecting chamber (3) and the second chamber (4) has a friction surface (7).

3. The radiotherapy auxiliary positioning device according to claim 1, characterized in that: A partition net (8) is provided in the connecting cavity (3), and the partition net (8) is fixed between the connecting cavity (3) and the first cavity (2) and the second cavity (4) on both sides to limit the passage of filler.

4. The radiotherapy auxiliary positioning device according to claim 1, characterized in that: The positioning pad (1) is provided with a sealing pipe (9), and the sealing pipe (9) corresponds to the exhaust joint (5) and is located at an end away from the first shaping portion (11). The sealing pipe (9) has a connecting end (10), and the exhaust joint (5) is provided with a vent hole (14), and the vent hole (14) is connected to the second chamber (4). The connecting end (10) is embedded in the vent hole (14) and then threadedly connected to achieve sealing.

5. The radiotherapy auxiliary positioning device according to claim 4, characterized in that: The sealing pipe (9) is penetrated by an air guide channel (15), the air guide channel (15) is communicated with the vent hole (14), the air guide channel (15) comprises a tapered section (151) and an air extraction section (152), the tapered section (151) is gradually expanded towards the through end close to the air extraction section (152), a piston member (16) is slidably connected in the air guide channel (15), an elastic member (17) is connected between the piston member (16) and the inner wall of the air guide channel (15), and the elastic force of the elastic member (17) is used to seal the piston member (16) in the tapered section (151); When the sealing connecting pipe (9) is evacuated, the piston member (16) overcomes the elastic force of the elastic member (17) so that the tapered section (151) is open to achieve air extraction; when the air extraction stops, the piston member (16) blocks the tapered section (151) under the elastic force of the elastic member (17) to achieve sealing.

6. The radiotherapy auxiliary positioning device according to claim 5, characterized in that: The piston member (16) is provided with a sealing ring (18), the sealing ring (18) is sleeved on the piston member (16), the piston member (16) is provided with an annular groove (19) corresponding to the sealing ring (18), and the sealing ring (18) is embedded in the annular groove (19) to press against the inner wall of the tapered section (151).

7. The radiotherapy auxiliary positioning device according to claim 5, characterized in that: The sealing connecting pipe (9) is provided with an end cover (20), and the end cover (20) is used to cover the through end of the air extraction section (152). The sealing connecting pipe (9) is sleeved with a sealing ring (21), and the sealing ring (21) is tightly pressed between the end cover (20) and the side wall of one end of the sealing connecting pipe (9).

8. The radiotherapy auxiliary positioning device according to claim 1, characterized in that: The first shaping portion (11) has a head supporting portion (22), and the head supporting portion (22) is used for supporting the head.

9. The radiotherapy auxiliary positioning device according to claim 1, characterized in that: The positioning pad (1) is provided with a positioning strip (23), the positioning strip (23) extending to both sides of the lower end surface of the positioning pad (1), the positioning strip (23) is provided with a positioning hole (24), and the positioning hole (24) is for bolts to pass through to achieve disassembly and assembly.

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