A body surface marking device and method for radiotherapy positioning

Abstract

The present invention discloses a body surface marking device and method for radiotherapy positioning, relates to the technical field related to radiotherapy marking devices, comprises a radiotherapy machine and a treatment bed and a cross infrared laser transmitter arranged on the radiotherapy machine, guide grooves are provided on both sides of the treatment bed, sliding blocks are slidably installed in the guide grooves, a mounting frame is fixedly installed on the sliding block, a semicircular arc plate is slidably installed on one of the mounting frames, a connecting bridge is fixedly installed on the arc plate and a first electric push rod is fixedly installed on the lower surface of the connecting bridge, a marking cylinder is fixedly installed on the output end of the first electric push rod, an opening and closing component is provided on the marking cylinder and four flexible plates are provided through the opening and closing component; the present invention can continuously supply ink to the marking pen head, facilitates continuous marking and marking operations, and does not need to replace the pen core or dip the marking liquid multiple times in the traditional way, and is simple to operate and easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field related to radiotherapy marking devices, and in particular to a body surface marking device and method for radiotherapy positioning. Background Art

[0002] Radiotherapy is a form of treatment that uses ionizing radiation. The principle is that the energy generated by a large amount of radiation can damage the chromosomes of cells, stop the cells from growing, and thus eliminate cancer cells that can divide and grow rapidly. Before the radiotherapy process, positioning marks need to be drawn on the patient's skin.

[0003] In current clinical work, the existing marking methods are mostly to draw lines with a marking pen or put the marking liquid in a glass bottle, dip the marking liquid with a bamboo stick, and then draw the treatment area on the patient's skin. In actual use, when the dipped marking liquid or the marking liquid in the marking pen is exhausted, it is necessary to replace a different inner core or dip the marking liquid again, which is inconvenient to operate, and it is not convenient to continuously mark and complete the marking operation at one time, which affects the marking effect. In addition, since the patient's body surface is not a flat plane, the traditional marking device is prone to discontinuous and uniform marking during the marking process, and medical staff need to repeatedly redraw it, which results in a slow marking speed and discomfort to the patient, affecting the patient's experience; in addition, since radiotherapy operations are mostly required for multiple times during the radiotherapy process, medical staff need to continuously adjust the patient's position before radiotherapy, but it is difficult to adjust it in place at one time, and some even need to be adjusted multiple times. The operation is cumbersome, the positioning accuracy is not high, and the repeatability of the front and back positions is poor. Summary of the invention

[0004] In order to solve the defects of the prior art, the present invention provides a body surface marking device and method for radiotherapy positioning.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a body surface marking device for radiotherapy positioning, comprising a radiotherapy machine, a treatment bed and a cross infrared laser transmitter arranged on the radiotherapy machine, guide grooves are provided on both sides of the treatment bed, sliding blocks are slidably installed in the guide grooves, and a mounting frame is fixedly installed on the sliding block, a semicircular arc plate is slidably installed on one of the mounting frames, a connecting bridge is fixedly installed on the arc plate, and a first electric push rod is fixedly installed on the lower surface of the connecting bridge, a marking cylinder is fixedly installed on the output end of the first electric push rod, an opening and closing component is provided on the marking cylinder, and four flexible plates are provided through the opening and closing component, and the four flexible plates are evenly distributed in an array along the circumference, each of the flexible plates is provided with a liquid storage structure, and a marking pen head is provided through the liquid storage structure, and three auxiliary marking points are fixedly installed on the end of the marking pen head away from the marking cylinder;

[0007] A locking assembly is provided on the other installation frame, and an adjustment assembly for positioning and adjusting the arc-shaped plate is provided on the installation frame on the same side of the arc-shaped plate;

[0008] Four calibration pieces are fixedly mounted on the outer surface of the marking cylinder, and the calibration pieces and the flexible plate on the same side are located in the same vertical plane.

[0009] As a preferred technical solution of the present invention, the opening and closing assembly includes a circular ring fixedly installed on the outer surface of the mark and fixedly connected to the connecting bridge, a sliding sleeve is slidably installed on the outer surface of the mark tube, a second electric push rod is fixedly installed on the lower surface of the circular ring and the output end of the second electric push rod is fixedly connected to the sliding sleeve, four first hinged rods are hinged on the outer surface of the sliding sleeve, a trapezoidal slide groove is provided on the flexible plate and a trapezoidal slider is slidably installed in the trapezoidal slide groove, the end of the first hinged rod away from the sliding sleeve is hinged to the trapezoidal slider on the same side, each of the flexible plates is hinged with a second hinged rod, the end of the second hinged rod away from the flexible plate on the same side is hinged to the mark tube, and suction cups are fixedly installed on the ends of the four flexible plates close to each other.

[0010] As a preferred technical solution of the present invention, a first spring is provided in the trapezoidal slide groove, and two ends of the first spring are respectively fixedly connected to the trapezoidal sliding block and the inner wall of the trapezoidal slide groove on the same side.

[0011] As a preferred technical solution of the present invention, the liquid storage structure comprises a flexible liquid storage box fixedly mounted on the lower surface of the flexible plate, a partition plate fixedly mounted in the flexible liquid storage box, the partition plate divides the space in the flexible liquid storage box into a liquid storage chamber and a filtrate chamber, a push plate slidably mounted in the liquid storage chamber, a plurality of push rods slidably mounted in the flexible liquid storage box, the top end of each push rod extends into the liquid storage chamber and is fixedly connected to the push plate, the bottom of each push rod is fixedly connected to the marking pen head, and a liquid injection hole is opened on the flexible liquid storage box and a one-way valve is arranged in the liquid injection hole;

[0012] The outer surface of the push rod is sleeved with a return spring, and the two ends of the return spring are respectively fixedly connected to the push plate and the partition plate, and a plurality of sealing balls are fixedly installed on the lower surface of the push plate, and a plurality of leakage holes used in conjunction with the sealing balls are opened on the partition plate, and the aperture of the leakage hole gradually decreases from the liquid storage chamber side to the filtrate chamber side, and a through hole is opened at the bottom of the flexible liquid storage box, and a sealing sleeve is sealingly and slidably installed in the through hole, and a cotton swab is fixedly installed in the sealing sleeve, and the bottom end of the cotton swab is fixedly connected to the marking pen head, and the top end of the cotton swab passes through the through hole and extends into the filtrate chamber and is fixedly installed with absorbent cotton.

[0013] As a preferred technical solution of the present invention, a scraper boss with a trapezoidal cross-section is fixedly installed in the filtrate chamber opposite to the through hole, and the area of ​​the upper surface of the scraper boss is smaller than the area of ​​the lower surface of the scraper boss, and a channel for the cotton swab to pass through is opened on the scraper boss.

[0014] As a preferred technical solution of the present invention, the adjustment component includes a rotating shaft rotatably mounted on a mounting frame on the same side of the arc plate, one end of the rotating shaft is fixedly connected to an output end of a driving motor fixedly mounted on the mounting frame on the same side, a gear ring is fixedly mounted on one side of the arc plate, and a driving gear meshing with the gear ring is fixedly mounted on the rotating shaft.

[0015] As a preferred technical solution of the present invention, an angle plate is fixedly mounted on a side of the arc plate away from the gear ring.

[0016] As a preferred technical solution of the present invention, the locking assembly includes a bidirectional screw rod rotatably installed between two mounting frames, a handwheel is fixedly installed at one end of the bidirectional screw rod, and transverse clamping plates are threadedly installed on the outer surfaces of the two sections of the thread of the bidirectional screw rod, a rack plate is fixedly installed on the mounting frame, a connecting shaft is rotatably installed on the transverse clamping plate, and a transmission gear meshing with the rack plate is fixedly installed on the top of the connecting shaft, a threaded rod is fixedly installed on the bottom end of the connecting shaft, a sleeve is threadedly installed on the bottom end of the threaded rod, and a pressing plate is fixedly installed on the bottom of the sleeve.

[0017] As a preferred technical solution of the present invention, a scale is fixedly installed on the guide groove.

[0018] A method for using a body surface marking device for radiotherapy positioning comprises the following steps:

[0019] S1. Positioning: By rotating the bidirectional screw rod, the two lateral clamping plates are brought close to each other and clamp the treatment bed, and the two mounting frames are fixed on both sides of the treatment bed. Then, the gear ring and the arc plate are driven by the driving motor to rotate. The arc plate rotates and drives the marking cylinder to rotate accordingly, so that the cross laser generated by the cross infrared laser transmitter coincides with the four calibration parts, completing the positioning of the marking cylinder;

[0020] S2, unfolding: after the positioning is completed, the flexible plate is rotated by the extension of the second electric push rod to unfold the four marking pen heads, and then the marking tube is driven down by the first electric push rod to make the marking pen heads fit the patient's skin;

[0021] S3. Marking: When the marking pen tip contacts the patient's skin, the marking pen tip is pressed and moves upward, and the sealing ball is driven to move upward by the push plate, thereby releasing the seal on the leakage hole, so that the marking liquid in the liquid storage chamber flows into the absorbent cotton through the leakage hole. The absorbent cotton absorbs the marking liquid and transports it to the marking pen tip through the cotton swab for marking and marking.

[0022] The beneficial effects of the present invention are:

[0023] 1. This body surface marking device and method for radiotherapy positioning, by setting up a liquid storage structure, when the marking pen tip contacts the patient's skin, the marking pen tip is pressed to drive the push rod and the absorbent cotton to move upward, and then drive the sealing ball to follow the upward movement and release the seal of the leakage hole, so that the marking liquid in the liquid storage chamber flows into the absorbent cotton through the leakage hole, and the absorbent cotton absorbs the marking liquid and transports it to the marking pen tip through a cotton swab for marking and marking operations, thereby realizing a continuous ink supply operation for the marking pen tip, facilitating continuous marking and marking operations, without the need to replace the pen core or dip the marking liquid multiple times in the traditional way, and the operation is simple and easy to use.

[0024] 2. This body surface marking device and method for radiotherapy positioning, by setting an opening and closing structure, when a marking operation is required, the second electric push rod extends to drive the sliding sleeve to move downward and drive the flexible plate to rotate. When the flexible plate rotates to be vertically aligned with the bottom of the marking tube, the first electric push rod can be used to drive the marking tube to descend so that the marking pen tip can perform a positioning marking operation on the patient. If the patient's marking point is located on a curved surface of the human body, when the flexible plate rotates to be vertically aligned with the bottom of the marking tube, the second electric push rod continues to extend to drive the trapezoidal slider to move in the trapezoidal slide groove, so that one end of the flexible plate bends and adapts to the patient's body surface, so that the marking pen tip can better fit the patient's skin and can better fit the human body. In this way, the marking speed is fast, the line marking operation can be completed in one go, and the discomfort caused to the patient by repeated application of the traditional marking pen is avoided.

[0025] 3. This body surface marking device and method for radiotherapy positioning, by setting an adjustment component, the driving motor drives the rotating shaft and the driving gear to rotate, the driving gear rotation drives the gear ring and the arc plate to rotate, the arc plate rotation drives the marking tube to follow the rotation, so that the position of the marking tube and the marking pen tip can be adaptively adjusted according to actual marking needs.

[0026] 4. This body surface marking device and method for radiotherapy positioning, by setting a locking assembly, rotating the hand wheel to drive the bidirectional screw to rotate, so that the two horizontal clamping plates approach each other and clamp and fix the treatment bed, so that the two installation frames can be fixed on both sides of the treatment bed. When the two horizontal clamping plates approach each other, they will drive the transmission gear to rotate through the rack plate. The rotation of the transmission gear drives the threaded rod to follow the rotation, and then drives the pressing plate to move downward to squeeze the treatment bed, so that the installation frame can be more stably fixed on the treatment bed, thereby further improving the stability of the installation frame.

[0027] 5. This body surface marking device and method for radiotherapy positioning, by setting an angle disk and a scale, can mark the deflection angle of the marking tube through the angle disk, and can mark the position of the mounting frame on the treatment bed through the scale, so that the position of the marking tube can be marked, thereby improving the accuracy of patient positioning and ensuring the repeatability and accuracy of the patient's position during the marking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 It is a schematic diagram of the overall structure of a body surface marking device and method for radiotherapy positioning according to the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of an adjustment component of a body surface marking device and method for radiotherapy positioning according to the present invention;

[0031] Figure 3 It is a schematic diagram of the installation frame structure of a body surface marking device and method for radiotherapy positioning according to the present invention;

[0032] Figure 4 yes Figure 3 A schematic diagram of the structure enlargement in the middle;

[0033] Figure 5 It is a schematic diagram of the structure of a marking tube of a body surface marking device and method for radiotherapy positioning according to the present invention;

[0034] Figure 6It is a schematic diagram of the flexible board structure of a body surface marking device and method for radiotherapy positioning of the present invention;

[0035] Figure 7 It is a schematic cross-sectional structure diagram of a flexible liquid storage box of a body surface marking device and method for radiotherapy positioning according to the present invention;

[0036] Figure 8 yes Figure 7 A magnified schematic diagram of the structure at B in the middle;

[0037] Fig. 9 It is a schematic diagram of the structure of a partition plate of a body surface marking device and method for radiotherapy positioning according to the present invention;

[0038] Fig.10 It is a schematic diagram of the sealing sleeve structure of a body surface marking device and method for radiotherapy positioning of the present invention;

[0039] Fig.11 The present invention is a schematic diagram of a scraping boss structure of a body surface marking device and method for radiotherapy positioning.

[0040] In the figure: 1. radiotherapy machine; 2. treatment bed; 3. cross infrared laser transmitter; 4. guide groove; 5. sliding block; 6. mounting frame; 7. arc plate; 8. auxiliary marking point; 9. connecting bridge; 10. first electric push rod; 11. calibration piece; 12. marking cylinder; 13. opening and closing assembly; 131. circular ring; 132. sliding sleeve; 133. second electric push rod; 134. first hinge rod; 135. trapezoidal slide groove; 136. trapezoidal slider; 137. second hinge rod; 138. suction cup; 139. first spring; 14. flexible plate; 15. liquid storage structure; 151. flexible liquid storage box; 152. partition plate; 153. Liquid storage chamber; 154, filtrate chamber; 155, push plate; 156, push rod; 157, reset spring; 158, sealing ball; 159, leakage hole; 1510, sealing sleeve; 1511, cotton swab; 1512, scraper boss; 1513, absorbent cotton; 1514, marking pen tip; 16, locking assembly; 161, bidirectional screw rod; 162, transverse clamping plate; 163, rack plate; 164, transmission gear; 165, threaded rod; 166, pressing piece; 167, scale; 17, adjustment assembly; 171, rotating shaft; 172, driving motor; 173, gear ring; 174, driving gear; 175, angle plate. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0042] Example: Figures 1 to 11As shown, the present invention is a body surface marking device for radiotherapy positioning, comprising a radiotherapy machine 1 and a treatment bed 2 and a cross infrared laser emitter 3 arranged on the radiotherapy machine 1, guide grooves 4 are provided on both sides of the treatment bed 2, and sliding blocks 5 are slidably installed in the guide grooves 4, and a mounting frame 6 is fixedly installed on the sliding block 5, and a semicircular arc plate 7 is slidably installed on one of the mounting frames 6, a connecting bridge 9 is fixedly installed on the arc plate 7, and a first electric push rod 10 is fixedly installed on the lower surface of the connecting bridge 9, and a marking tube 12 is fixedly installed on the output end of the first electric push rod 10, and an opening and closing component 13 is provided on the marking tube 12 and is opened and closed through the opening The combined component 13 is provided with four flexible plates 14, and the four flexible plates 14 are evenly distributed in an array along the circumference. A liquid storage structure 15 is provided on each flexible plate 14, and a marking pen head 1514 is provided through the liquid storage structure 15. Three auxiliary marking points 8 are fixedly installed on the end of the marking pen head 1514 away from the marking tube 12; a locking component 16 is provided on the other mounting frame 6, and an adjustment component 17 for positioning and adjusting the arc plate 7 is provided on the mounting frame 6 on the same side of the arc plate 7; four calibration parts 11 are fixedly installed on the outer surface of the marking tube 12, and the calibration parts 11 and the flexible plates 14 on the same side are located in the same vertical plane.

[0043] Specifically, when it is necessary to mark the positioned patient, the sliding mounting frame 6 is slid to a suitable position, and then the mounting frame 6 is fixed on the treatment bed 2 by the locking assembly 16, and then the position of the marking tube 12 is adjusted by the adjusting assembly 17, so that the cross laser emitted by the cross infrared laser emitter 3 coincides with the four calibration parts 11. After the positioning is completed, the four marking pen heads 1514 can be unfolded through the opening and closing assembly 13 to perform the positioning marking operation. By setting the auxiliary marking points 8, when the marking line drawn by any marking pen head 1514 is not clear, it can be located and retrieved through the three auxiliary marking points 8 on the same side.

[0044] Among them, Figure 1 , Figure 5 and Figure 6 As shown, the opening and closing assembly 13 includes a circular ring 131 fixedly mounted on the outer surface of the mark and fixedly connected to the connecting bridge 9, a sliding sleeve 132 is slidably mounted on the outer surface of the mark tube 12, a second electric push rod 133 is fixedly mounted on the lower surface of the circular ring 131, and the output end of the second electric push rod 133 is fixedly connected to the sliding sleeve 132, four first hinged rods 134 are hinged on the outer surface of the sliding sleeve 132, a trapezoidal slide groove 135 is provided on the flexible plate 14, and a trapezoidal slider 136 is slidably mounted in the trapezoidal slide groove 135, the end of the first hinged rod 134 away from the sliding sleeve 132 is hinged to the trapezoidal slider 136 on the same side, each flexible plate 14 is hinged with a second hinged rod 137, the end of the second hinged rod 137 away from the flexible plate 14 on the same side is hinged to the mark tube 12, and the ends of the four flexible plates 14 close to each other are fixedly mounted with suction cups 138.

[0045] Specifically, when a marking operation is required, the second electric push rod 133 extends to drive the sliding sleeve 132 to move downward, and drives the flexible plate 14 to rotate through the first hinge rod 134. When the flexible plate 14 rotates to fit vertically with the bottom of the marking tube 12, the marking tube 12 can be driven down by the first electric push rod 10 so that the marking pen head 1514 can perform a positioning marking operation on the patient. If the patient's marking point is located on the curved surface of the human body, when the flexible plate 14 rotates to fit vertically with the bottom of the marking tube 12, the second electric push rod 133 continues to extend to drive the trapezoidal slider 136 to move in the trapezoidal slide groove 135. Since one end of the flexible plate 14 fits with the bottom of the marking tube 12, the trapezoidal slider The movement of 136 in the trapezoidal slide groove 135 will make one side of the flexible plate 14 press against the marking tube 12, and the other side bend and adapt to the patient's body surface, so that the marking pen head 1514 can better fit the patient's skin and can better fit the human body. In this way, the marking speed is fast, the marking and marking operation can be completed at one time, and the discomfort caused to the patient by repeated application of the traditional marking pen is avoided. After the marking is completed, the sliding sleeve 132 is driven to move upward by the contraction of the second electric push rod 133. The upward movement of the sliding sleeve 132 drives the flexible plate 14 to deflect upward through the first hinge rod 134 and the second hinge rod 137, so that the flexible plate 14 can be stored to avoid interference with subsequent operation processes.

[0046] Further, such as Figure 6 As shown, a first spring 139 is provided in the trapezoidal slide groove 135 , and two ends of the first spring 139 are respectively fixedly connected to the trapezoidal sliding block 136 and the inner wall of the trapezoidal slide groove 135 on the same side.

[0047] Specifically, by setting the first spring 139, the elastic force of the first spring 139 itself can be used to pre-tighten the trapezoidal slider 136, so that in the initial stage when the second electric push rod 133 drives the sliding sleeve 132 to move, the sliding sleeve 132 will first drive the flexible plate 14 to rotate through the hinge rod. After the flexible plate 14 and the marking tube 12 are tightly pressed against each other, the downward movement of the sliding sleeve 132 will drive the trapezoidal slider 136 to move and stretch the first spring 139.

[0048] Among them, Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, the liquid storage structure 15 includes a flexible liquid storage box 151 fixedly mounted on the lower surface of the flexible plate 14, a partition plate 152 is fixedly mounted in the flexible liquid storage box 151, and the partition plate 152 divides the space in the flexible liquid storage box 151 into a liquid storage chamber 153 and a filtrate chamber 154, a push plate 155 is slidably mounted in the liquid storage chamber 153, and a plurality of push rods 156 are slidably mounted in the flexible liquid storage box 151, the top end of each push rod 156 extends into the liquid storage chamber 153 and is fixedly connected to the push plate 155, and the bottom of each push rod 156 is fixedly connected to the marking pen head 1514, and a liquid injection hole is opened on the flexible liquid storage box 151 and a one-way valve is arranged in the liquid injection hole; a return spring 157 is sleeved on the outer surface of the push rod 156, and a return spring 157 is provided on the outer surface of the push rod 156. The two ends of the positioning spring 157 are fixedly connected to the push plate 155 and the partition plate 152 respectively, a plurality of sealing balls 158 are fixedly installed on the lower surface of the push plate 155, and a plurality of leakage holes 159 used in conjunction with the sealing balls 158 are opened through the partition plate 152, and the aperture of the leakage hole 159 gradually decreases from the liquid storage chamber 153 side to the filtrate chamber 154 side, and a through hole is opened at the bottom of the flexible liquid storage box 151 and a sealing sleeve 1510 is sealingly and slidably installed in the through hole, a cotton swab 1511 is fixedly installed in the sealing sleeve 1510, the bottom end of the cotton swab 1511 is fixedly connected to the marking pen head 1514, and the top end of the cotton swab 1511 passes through the through hole and extends into the filtrate chamber 154 and is fixedly installed with absorbent cotton 1513.

[0049] In detail, the push plate 155, the partition plate 152 and the sealing sleeve 1510 are all made of flexible materials, and the marking liquid is pre-injected into the liquid storage chamber 153 through the injection hole. When the marking pen head 1514 contacts the patient's skin, the marking pen head 1514 is pressed to drive the push rod 156 and the absorbent cotton 1513 to move upward, so that the absorbent cotton 1513 moves upward to the filtrate chamber 154 and fits with the partition plate 152. The upward movement of the push rod 156 will drive the push plate 155 to follow the upward movement and stretch the reset spring 157. The upward movement of the push plate 155 drives the sealing ball 158 to follow the upward movement and release the seal of the leakage hole 159. The leakage hole 159 can pressurize the marking liquid flowing out through the leakage hole 159, so that the marking liquid can flow out smoothly through the leakage hole 159, and increase the outflow speed of the marking liquid, so that the marking liquid in the liquid storage chamber 153 flows out through the leakage hole 159 The marking liquid is put into the absorbent cotton 1513, and the absorbent cotton 1513 absorbs the marking liquid and transports it to the marking pen head 1514 through the cotton swab 1511 for marking and marking, thereby realizing the continuous ink supply operation of the marking pen head 1514, which is convenient for continuous marking and marking, and there is no need to replace the pen core or dip the marking liquid multiple times in the traditional way. The operation is simple and easy to use; after the marking is completed, when the marking pen head 1514 is out of contact with the patient, the pressure on the marking pen head 1514 disappears, and the reset spring 157 drives the push plate 155 and the sealing ball 158 to reset under the action of its own elastic force, and seals the leakage hole 159 to avoid the leakage of the marking liquid in the liquid storage chamber 153 and the pollution and waste of the marking liquid; the reset spring 157 can make the sealing ball 158 press against the leakage hole 159 on the same side under the action of its own elastic force, thereby improving the sealing effect of the sealing ball 158 and facilitating the rapid reset of the sealing ball 158.

[0050] Further, such as Figure 7 , Fig. 9 and Fig.11 As shown, a scraper boss 1512 with a trapezoidal cross-section is fixedly installed in the filtrate chamber 154 opposite to the through hole, and the area of ​​the upper surface of the scraper boss 1512 is smaller than the area of ​​the lower surface of the scraper boss 1512. The scraper boss 1512 is provided with a channel for the cotton swab 1511 to pass through.

[0051] By setting up the scraping boss 1512, when the marking pen head 1514 performs the marking operation, the absorbent cotton 1513 absorbs the marking liquid and expands. When the marking pen head 1514 is stored after the marking is completed, the marking pen head 1514 is reset under the action of the elasticity of the second reset spring 157 itself and drives the absorbent cotton 1513 to reset. During the reset of the absorbent cotton 1513, the scraping boss 1512 will squeeze the expanded absorbent cotton 1513 to scrape off the excess marking liquid in the absorbent cotton 1513, so as to avoid excessive marking liquid stored in the absorbent cotton 1513 when the device is stored, which will cause the marking liquid to seep out of the marking pen head 1514 and cause waste of marking liquid.

[0052] Among them, Figure 1 and Figure 2 As shown, the adjustment assembly 17 includes a rotating shaft 171 rotatably mounted on the mounting frame 6 on the same side of the arc plate 7, one end of the rotating shaft 171 is fixedly connected to the output end of a driving motor 172 fixedly mounted on the mounting frame 6 on the same side, a gear ring 173 is fixedly mounted on one side of the arc plate 7, and a driving gear 174 meshing with the gear ring 173 is fixedly mounted on the rotating shaft 171.

[0053] Specifically, the driving motor 172 drives the rotating shaft 171 and the driving gear 174 to rotate, the driving gear 174 drives the gear ring 173 and the arc plate 7 to rotate, and the arc plate 7 drives the marking tube 12 to rotate accordingly, so that the position of the marking tube 12 and the marking pen head 1514 can be adaptively adjusted according to actual marking needs.

[0054] Further, such as Figure 2 As shown, an angle disc 175 is fixedly installed on one side of the arc plate 7 away from the gear ring 173. By setting the angle disc 175, the deflection angle of the marking cylinder 12 can be recorded, which is convenient for positioning the position of the marking cylinder 12, thereby improving the accuracy of patient positioning and ensuring the repeatability and accuracy of the patient's position during the marking process.

[0055] Among them, Figure 2 , Figure 3 and Figure 4 As shown, the locking assembly 16 includes a bidirectional screw rod 161 rotatably mounted between two mounting frames 6, a hand wheel is fixedly mounted at one end of the bidirectional screw rod 161, transverse clamping plates 162 are threadedly mounted on the outer surfaces of the two sections of the threads of the bidirectional screw rod 161, a rack plate 163 is fixedly mounted on the mounting frame 6, a connecting shaft is rotatably mounted on the transverse clamping plate 162, and a transmission gear 164 meshing with the rack plate 163 is fixedly mounted on the top of the connecting shaft, a threaded rod 165 is fixedly mounted on the bottom end of the connecting shaft, a sleeve is threadedly mounted on the bottom end of the threaded rod 165, and a pressing plate 166 is fixedly mounted on the bottom of the sleeve.

[0056] Specifically, one side of the pressing piece 166 is in contact with the transverse clamping plate 162, and the hand wheel is turned to drive the bidirectional screw rod 161 to rotate. The rotation of the bidirectional screw rod 161 drives the two transverse clamping plates 162 to approach each other and clamp and fix the treatment bed 2, so that the two installation frames 6 can be fixed on both sides of the treatment bed 2. When the two transverse clamping plates 162 approach each other, they will drive the transmission gear 164 to rotate through the rack plate 163. The rotation of the transmission gear 164 drives the threaded rod 165 to rotate accordingly, thereby driving the pressing piece 166 to move downward to squeeze the treatment bed 2, so that the installation frame 6 can be more stably fixed on the treatment bed 2, thereby further improving the stability of the installation frame 6.

[0057] Among them, Figure 1 As shown, a scale 167 is fixedly mounted on the guide groove 4. The scale 167 is provided to facilitate positioning and marking of the position of the mounting frame 6, thereby improving the accuracy of patient positioning and ensuring the repeatability and accuracy of the patient's position during marking.

[0058] A method for using a body surface marking device for radiotherapy positioning comprises the following steps:

[0059] S1. Positioning: By rotating the bidirectional screw rod 161, the two lateral clamping plates 162 are brought close to each other and clamp the treatment bed 2, and the two mounting frames 6 are fixed on both sides of the treatment bed 2. Then, the gear ring 173 and the arc plate 7 are driven by the driving motor 172 to rotate. The arc plate 7 rotates and drives the marking cylinder 12 to rotate accordingly, so that the cross laser generated by the cross infrared laser transmitter 3 coincides with the four calibration pieces 11, and the positioning of the marking cylinder 12 is completed;

[0060] S2, unfolding: after the positioning is completed, the flexible plate 14 is rotated by the extension of the second electric push rod 133 to unfold the four marking pen heads 1514, and then the marking tube 12 is driven down by the first electric push rod 10 so that the marking pen heads 1514 are in contact with the patient's skin;

[0061] S3. Marking: When the marking pen tip 1514 contacts the patient's skin, the marking pen tip 1514 moves upward under pressure, and drives the sealing ball 158 to move upward through the push plate 155, thereby releasing the seal on the leakage hole 159, so that the marking liquid in the liquid storage chamber 153 flows into the absorbent cotton 1513 through the leakage hole 159. The absorbent cotton 1513 absorbs the marking liquid and transports it to the marking pen tip 1514 through the cotton swab 1511 for marking and marking operations.

[0062] During operation, after fixing the patient, the sliding installation frame 6 is slid to a suitable position, and the hand wheel is turned to drive the bidirectional screw rod 161 to rotate, so that the two transverse clamping plates 162 are close to each other and clamp and fix the treatment bed 2, and the two installation frames 6 are fixed on both sides of the treatment bed 2. When the two transverse clamping plates 162 are close to each other, the threaded rod 165 is driven to rotate through the rack plate 163 and the transmission gear 164, and then the pressing sheet 166 is driven to move downward to squeeze the treatment bed 2, so that the installation frame 6 can be more stably fixed on the treatment bed 2;

[0063] Then, the driving motor 172 is started, and the driving motor 172 drives the rotating shaft 171 and the driving gear 174 to rotate, and then drives the gear ring 173 and the arc plate 7 to rotate. The arc plate 7 rotates and drives the marking tube 12 to rotate accordingly, so that the cross laser generated by the cross infrared laser transmitter 3 coincides with the four calibration pieces 11, and the positioning of the marking tube 12 is completed;

[0064] After the positioning is completed, the second electric push rod 133 is started, and the second electric push rod 133 extends to drive the sliding sleeve 132 to move downward and drives the flexible plate 14 to rotate through the first hinge rod 134. When the flexible plate 14 rotates to fit vertically with the bottom of the marking tube 12, the marking tube 12 is driven down by the first electric push rod 10 so that the marking pen head 1514 performs a positioning and marking operation on the patient. If the patient's target area marking point is located on the curved surface of the human body, when the flexible plate 14 rotates to fit vertically with the bottom of the marking tube 12, the second electric push rod 133 continues to extend to drive the trapezoidal slider 136 to move in the trapezoidal slide groove 135, so that one side of the flexible plate 14 is pressed against the marking tube 12, and the other side is bent and adapted to the patient's body surface, so that the marking pen head 1514 can better fit the patient's skin.

[0065] When the marking pen tip 1514 contacts the patient's skin, the marking pen tip 1514 is pressed to drive the push rod 156 and the absorbent cotton 1513 to move upward, so that the absorbent cotton 1513 moves upward into the filtrate chamber 154 and fits with the partition plate 152. The upward movement of the push rod 156 drives the push plate 155 to follow the upward movement and stretch the reset spring 157. The upward movement of the push plate 155 drives the sealing ball 158 to follow the upward movement and release the seal of the leakage hole 159, so that the marking liquid in the liquid storage chamber 153 flows into the absorbent cotton 1513 through the leakage hole 159. The absorbent cotton 1513 absorbs the marking liquid and transports it to the marking pen tip 1514 through the cotton swab 1511 for marking and marking.

[0066] After the marking is completed, the sliding sleeve 132 is driven upward by the contraction of the second electric push rod 133, and the flexible plate 14 is driven to deflect upward, so that the flexible plate 14 is stored to avoid interference with the subsequent operation process. After the marking pen tip 1514 is out of contact with the patient, the pressure on the marking pen tip 1514 disappears, and the reset spring 157 drives the push plate 155 and the sealing ball 158 to reset under the action of its own elastic force, and the leakage hole 159 is sealed to avoid leakage of the marking liquid in the liquid storage chamber 153 and cause pollution and waste of the marking liquid.

[0067] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A body surface marking device for radiotherapy positioning, comprising a radiotherapy machine (1), a treatment bed (2) and a cross infrared laser transmitter (3) arranged on the radiotherapy machine (1), characterized in that: Guide grooves (4) are provided on both sides of the treatment bed (2), and sliding blocks (5) are slidably mounted in the guide grooves (4). A mounting frame (6) is fixedly mounted on the sliding block (5), and a semicircular arc plate (7) is slidably mounted on one of the mounting frames (6). A connecting bridge (9) is fixedly mounted on the arc plate (7), and a first electric push rod (10) is fixedly mounted on the lower surface of the connecting bridge (9). A marking cylinder (12) is fixedly mounted on the output end of the first electric push rod (10), and an opening and closing component (13) is provided on the marking cylinder (12), and four flexible plates (14) are arranged through the opening and closing component (13). The four flexible plates (14) are evenly distributed in an array along the circumference, and a liquid storage structure (15) is provided on each of the flexible plates (14), and a marking pen head (1514) is arranged through the liquid storage structure (15). Three auxiliary marking points (8) are fixedly mounted on the end of the marking pen head (1514) away from the marking cylinder (12); A locking assembly (16) is provided on the other installation frame (6), and an adjustment assembly (17) for positioning and adjusting the arc-shaped plate (7) is provided on the installation frame (6) on the same side of the arc-shaped plate (7); Four calibration pieces (11) are fixedly mounted on the outer surface of the marking cylinder (12), and the calibration pieces (11) and the flexible plate (14) on the same side are located in the same vertical plane; The opening and closing assembly (13) comprises a ring (131) fixedly mounted on the outer surface of the marking cylinder (12) and fixedly connected to the connecting bridge (9); a sliding sleeve (132) is slidably mounted on the outer surface of the marking cylinder (12); a second electric push rod (133) is fixedly mounted on the lower surface of the ring (131); an output end of the second electric push rod (133) is fixedly connected to the sliding sleeve (132); four first hinged rods (134) are hingedly mounted on the outer surface of the sliding sleeve (132); and a first hinged rod (134) is provided on the flexible plate (14). A trapezoidal slide groove (135) is provided, and a trapezoidal slider (136) is slidably installed in the trapezoidal slide groove (135); one end of the first hinged rod (134) away from the sliding sleeve (132) is hinged to the trapezoidal slider (136) on the same side; a second hinged rod (137) is hinged to each of the flexible plates (14); one end of the second hinged rod (137) away from the flexible plate (14) on the same side is hinged to the marking tube (12); and one end of the four flexible plates (14) close to each other is fixedly installed with a suction cup (138); A first spring (139) is provided in the trapezoidal slide groove (135), and two ends of the first spring (139) are respectively fixedly connected to the trapezoidal sliding block (136) and the inner wall of the trapezoidal slide groove (135) on the same side; The liquid storage structure (15) comprises a flexible liquid storage box (151) fixedly mounted on the lower surface of the flexible plate (14); a partition plate (152) is fixedly mounted in the flexible liquid storage box (151); the partition plate (152) divides the space in the flexible liquid storage box (151) into a liquid storage chamber (153) and a filtrate chamber (154); a push plate (155) is slidably mounted in the liquid storage chamber (153); a plurality of push rods (156) are slidably mounted in the flexible liquid storage box (151); the top end of each push rod (156) extends into the liquid storage chamber (153) and is fixedly connected to the push plate (155); the bottom end of each push rod (156) is fixedly connected to a marking pen tip (1514); a liquid injection hole is provided on the flexible liquid storage box (151) and a one-way valve is provided in the liquid injection hole; The outer surface of the push rod (156) is sleeved with a return spring (157), and the two ends of the return spring (157) are respectively fixedly connected to the push plate (155) and the partition plate (152). A plurality of sealing balls (158) are fixedly mounted on the lower surface of the push plate (155). The partition plate (152) is provided with a plurality of leakage holes (159) for use with the sealing balls (158). The aperture of the leakage hole (159) ranges from the liquid storage chamber (153) to the liquid storage chamber (153). The side of the lateral filtrate chamber (154) gradually decreases, a through hole is provided at the bottom of the flexible liquid storage box (151), and a sealing sleeve (1510) is sealingly and slidably installed in the through hole, a cotton swab (1511) is fixedly installed in the sealing sleeve (1510), the bottom end of the cotton swab (1511) is fixedly connected to the marking pen head (1514), and the top end of the cotton swab (1511) passes through the through hole and extends into the filtrate chamber (154) and is fixedly installed with absorbent cotton (1513).

2. A body surface marking device for radiotherapy positioning according to claim 1, characterized in that: A scraper boss (1512) with a trapezoidal cross section is fixedly installed in the filtrate cavity (154) opposite to the through hole, and the area of ​​the upper surface of the scraper boss (1512) is smaller than the area of ​​the lower surface of the scraper boss (1512), and a channel for the cotton swab (1511) to pass through is opened through the scraper boss (1512).

3. A body surface marking device for radiotherapy positioning according to claim 1, characterized in that: The adjustment assembly (17) comprises a rotating shaft (171) rotatably mounted on a mounting frame (6) on the same side of the arc-shaped plate (7); one end of the rotating shaft (171) is fixedly connected to an output end of a driving motor (172) fixedly mounted on the mounting frame (6) on the same side; a gear ring (173) is fixedly mounted on one side of the arc-shaped plate (7); and a driving gear (174) meshing with the gear ring (173) is fixedly mounted on the rotating shaft (171).

4. A body surface marking device for radiotherapy positioning according to claim 3, characterized in that: An angle plate (175) is fixedly mounted on a side of the arc-shaped plate (7) away from the gear ring (173).

5. A body surface marking device for radiotherapy positioning according to claim 1, characterized in that: The locking assembly (16) comprises a bidirectional screw (161) rotatably mounted between two mounting frames (6), a hand wheel being fixedly mounted on one end of the bidirectional screw (161), transverse clamping plates (162) being threadedly mounted on the outer surfaces of two threaded sections of the bidirectional screw (161), a rack plate (163) being fixedly mounted on the mounting frame (6), a connecting shaft being rotatably mounted on the transverse clamping plate (162), a transmission gear (164) meshing with the rack plate (163) being fixedly mounted on the top end of the connecting shaft, a threaded rod (165) being fixedly mounted on the bottom end of the connecting shaft, a sleeve being threadedly mounted on the bottom end of the threaded rod (165), and a pressing plate (166) being fixedly mounted on the bottom of the sleeve.

6. A body surface marking device for radiotherapy positioning according to claim 5, characterized in that: A scale (167) is fixedly mounted on the guide groove (4).

7. A method for using a body surface marking device for radiotherapy positioning, applied to a body surface marking device for radiotherapy positioning according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Positioning: by rotating the bidirectional screw rod (161), the two lateral clamping plates (162) are brought close to each other and clamp the treatment bed (2), and the two mounting frames (6) are fixed on both sides of the treatment bed (2). Then, the gear ring 173 and the arc plate (7) are driven by the driving motor (172) to rotate. The arc plate (7) rotates and drives the marking cylinder (12) to rotate accordingly, so that the cross laser generated by the cross infrared laser transmitter (3) coincides with the four calibration pieces (11), thereby completing the positioning of the marking cylinder (12); S2, unfolding: after the positioning is completed, the flexible plate (14) is rotated by the extension and retraction of the second electric push rod (133), so that the four marking pen tips (1514) are unfolded, and then the marking cylinder (12) is driven downward by the first electric push rod (10) so that the marking pen tips (1514) are in contact with the patient's skin; S3. Marking: When the marking pen tip (1514) contacts the patient's skin, the marking pen tip (1514) is pressed to move upward, and drives the sealing ball (158) to move upward via the push plate (155), thereby releasing the seal of the leakage hole (159), so that the marking liquid in the liquid storage chamber (153) flows into the absorbent cotton (1513) via the leakage hole (159). The absorbent cotton (1513) absorbs the marking liquid and transports it to the marking pen tip (1514) via the cotton swab (1511) for marking and marking.

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