CN111905278A - Positioner is used in radiation therapy is intervene to liver cirrhosis portal vein high pressure - Google Patents

Abstract

The invention discloses a positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension. The side surfaces of the treatment equipment are fixedly connected, the top of the support plate is provided with a removable positioning thermoplastic plate, the top of the placement plate is slidably connected with two vertically arranged positioning blocks, and the top of the placement plate is provided with a transmission mechanism and positioning mechanism, the transmission mechanism includes a first spring rod fixedly connected to the top of the placing plate, the top of the first spring rod is fixedly connected with an arc-shaped contact block, and the interior of the placing plate is provided with a connecting mechanism and hair dryer. The present invention, through the cooperation between the transmission mechanism and the positioning mechanism, solves the problem that the patient's head cannot be effectively positioned during the traditional treatment of liver cirrhosis and venous hypertension, and ensures the accuracy and safety of the patient's treatment.

Description

A positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension

technical field

The invention relates to the technical field of hepatic cirrhosis venous hypertension, in particular to a positioning device for interventional radiotherapy of hepatic cirrhosis portal hypertension.

Background technique

Venous hypertension is a condition caused by persistently increased portal pressure, most of which are caused by liver cirrhosis, and a few are secondary to portal vein trunk or hepatic vein obstruction and other factors of unknown cause. It causes an increase in portal venous pressure.

Ineffective treatment of venous hypertension in cirrhosis will dilate the veins at the junction of the esophagus and stomach, causing severe acute upper gastrointestinal bleeding that is life-threatening. Radiation therapy for venous hypertension in cirrhosis can effectively relieve symptoms. A positioning device is required for radiotherapy. , the existing positioning device uses a softened thermoplastic plate to cover the patient's body after softening, and some fixed bayonet pins are connected to both ends of the thermoplastic plate, and the bayonet pins are fixed on a fixed plate made of carbon fiber material. After the plate is hardened, it can be shaped. The thermoplastic plate can position the patient's body. The patient's head cannot be positioned effectively, which will cause the patient's head to swing during treatment, which may cause the patient's body to move. If the treatment is deviated, When high-energy rays irradiate normal tissues, serious medical accidents will occur. At the same time, patients may be in a tense state during treatment and need to be effectively calm. Therefore, a positioning device for interventional radiotherapy for portal hypertension of liver cirrhosis is proposed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the disadvantage that the patient's head cannot be effectively positioned in the prior art, and proposes a positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension.

In order to achieve the above object, the present invention adopts the following technical solutions:

A positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension, comprising a radiotherapy device, a support plate and a placement plate located on the side of the radiotherapy device, the support plate and the placement plate are fixedly connected, and the placement plate and the side of the radiotherapy device are fixedly connected. Fixed connection, the top of the support plate is provided with a removable positioning thermoplastic plate, the top of the placement plate is slidably connected with two vertically arranged positioning blocks, and the top of the placement plate is provided with a transmission mechanism and a positioning mechanism , a connecting mechanism and a blowing mechanism are arranged inside the placing plate.

Preferably, the transmission mechanism includes a first spring rod fixedly connected to the top of the placing plate, the top of the first spring rod is fixedly connected with an arc-shaped contact block, and both sides of the bottom of the contact block are rotatably connected with connections The top of the placing plate is fixedly connected with two transmission pipes arranged with "J", and the semicircular position of the transmission pipe is provided with a semicircular sliding groove on the side, and the inner and outer side walls of the sliding groove are slid A sliding block, the two sliding blocks are fixedly connected by a sliding shaft, the sliding shaft and the two sliding blocks form an "I" type, and one end of the connecting rod away from the contact block and the side of the sliding block The inner side wall of the transmission tube is fixedly connected with a second spring rod, the inner side wall of one end of the transmission tube away from the connecting rod is slidably connected with a fixing block, and the end of the fixing block is fixedly connected with the side surface of the positioning block.

Preferably, opposite sides of the two positioning blocks are arranged inward in an arc shape, the positioning mechanism includes a positioning air cushion that is fixedly connected to the upper and lower sides of one side of the positioning blocks, and an ear protection block is fixedly connected to the middle of the side surface of the positioning block, so A side of the ear protection block away from the positioning block is fixedly connected with an ear blocking airbag, and an installation pipe is fixedly connected to the inside of the ear blocking airbag, and the installation pipe passes through the positioning block and extends to the outside of the positioning block. A threaded block is slidably connected, the outer side wall of the positioning block is rotatably connected with a rotating sleeve, the interior of the rotating sleeve is provided with an inner thread, and the inner side wall of the rotating sleeve is threadedly connected with the outer side wall of the threaded block.

Preferably, the connection mechanism includes an installation cavity provided inside the placing plate, wherein a second magnetic block is fixedly connected to the bottom of one of the positioning blocks, a first magnetic block is slidably connected to the inside of the installation cavity, and the first magnetic block is slidably connected to the bottom of one of the positioning blocks. A first contact piece is fixedly connected to the side of a magnetic block, a drive motor is fixedly connected to the inner side wall of the installation cavity, a second contact piece is fixedly connected to the top of the drive motor, and the top of the second contact piece is connected to the first contact piece. The bottom of a contact piece is in sliding contact, and the side surface of the first contact piece is connected to a power supply.

Preferably, the opposite faces of the first magnet block and the corresponding second magnet block are magnetically opposite.

Preferably, the blowing mechanism includes a fan blade that is fixedly sleeved on the output shaft of the drive motor, the top of the placing plate is provided with two air outlets, and the interior of the positioning block is provided with a plurality of air conduction grooves, so The other end of the air guide groove extends to the side surface of the positioning block, the inner side wall of the air guide groove is fixedly connected with ventilation pipes, and a plurality of the ventilation pipes are distributed on the side surface of the positioning block.

Compared with the prior art, the beneficial effects of the present invention are:

1. Through the cooperation between the transmission mechanism and the positioning mechanism, when the contact block moves down, it will drive the two positioning blocks to move relative to each other, and initially position the patient's head, which is specifically expressed as the head on the side of the patient's head. The three positions of the ear, the ear and the chin make the positioning effect better and more sufficient, effectively solving the problem that the patient's head cannot be effectively positioned during the traditional treatment of liver cirrhosis and venous hypertension, and the movement of the head may cause the patient's body to move and lead to deviations in the treatment This ensures the accuracy and safety of the patient’s treatment. It should be noted that the larger area of the sliding block can block the edge position of the sliding groove outlet, so that when the sliding block moves, it can squeeze the gas in the transmission tube to drive the The positioning block is moved and positioned, and then the ear blocking air bag can be inflated by rotating the rotating sleeve to block the patient's ear after positioning. Internal damage.

2. Through the cooperation between the connecting mechanism and the blowing mechanism, the two positioning blocks drive the first contact piece and the second contact piece to contact and energize when moving, and the energized drive motor drives the fan blade to rotate, and the rotating fan blade will The airflow enters the ventilation duct through the air outlet and the air channel, and blows the air around the patient's head naturally, so that the patient's head is kept awake and cool, and the tension of the patient is further relieved. It should be noted that, The function of the first spring rod is to compress the head of most patients to roughly the same position, so as to ensure the connection between the air outlet and the air guide groove. In the case of deviation, the air outlet and the air guide groove will also be partially Connected to ensure the completion of the ventilation effect.

Description of drawings

1 is a schematic structural diagram of a positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension proposed by the present invention;

2 is a top view of the structure of a positioning device support plate for interventional radiotherapy of liver cirrhosis and portal hypertension proposed by the present invention;

3 is a schematic structural diagram of a contact block of a positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension proposed by the present invention;

4 is a schematic structural diagram of a positioning device fixing block for interventional radiotherapy of liver cirrhosis and portal hypertension proposed by the present invention;

Fig. 5 is the enlarged view of A place in Fig. 2;

FIG. 6 is an enlarged view of B in FIG. 3 .

In the picture: 1. Radiation therapy equipment, 2. Support plate, 3. Placing plate, 4. Positioning block, 5. Positioning thermoplastic plate, 6. Ear protection block, 7. Ear blocking air bag, 8. Ventilation tube, 9. Rotating sleeve, 10. Thread block, 11. Contact block , 12 connecting rod, 13 transmission tube, 14 sliding groove, 15 first spring rod, 16 second spring rod, 17 fixing block, 18 air outlet, 19 driving motor, 20 fan blade, 21 second contact piece, 22 first Contact piece, 23 installation cavity, 24 first magnetic block, 25 second magnetic block, 26 sliding block, 27 positioning air cushion.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

1-6, a positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension, comprising a radiotherapy device 1, a support plate 2 and a placement plate 3 on the side of the radiotherapy device 1, and the support plate 2 and the placement plate 3 are fixedly connected, The placement plate 3 is fixedly connected to the side of the radiation therapy device 1, the top of the support plate 2 is provided with a removable positioning thermoplastic plate 5, the positioning thermoplastic plate 5 treats the patient's body part, and the top of the placement plate 3 is slidably connected with Two vertically arranged positioning blocks 4, the top of the placement plate 3 is provided with a transmission mechanism and a positioning mechanism, the transmission mechanism includes a first spring rod 15 fixedly connected to the top of the placement plate 3, and the first spring rod 15 is used for treatment. A good patient resets the contact block 11 as a whole, the top of the first spring rod 15 is fixedly connected with an arc-shaped contact block 11, both sides of the bottom of the contact block 11 are rotatably connected with connecting rods 12, and the top of the placement plate 3 is fixedly connected with a The two transmission pipes 13 arranged with "J", the semicircular position of the transmission pipe 13 is provided with a semicircular sliding groove 14 on the side, the inner and outer side walls of the sliding groove 14 slide the sliding blocks 26, and between the two sliding blocks 26 Through the fixed connection of the sliding shaft, the “I” type is formed between the sliding shaft and the two sliding blocks. The spring rod 16 and the second spring rod 16 are used to make the fixed block 17 drive the corresponding positioning block 4 to reset. The inner side wall of one end of the transmission tube 13 away from the connecting rod 12 is slidably connected with the fixed block 17 , and the end of the fixed block 17 is connected with the positioning block 4 side fixed connection.

The opposite sides of the two positioning blocks 4 are arranged inward in an arc shape, the positioning mechanism includes a positioning air cushion 27 fixedly connected to the upper and lower sides of one side of the positioning block 4, and the middle part of the side surface of the positioning block 4 is fixedly connected with an ear protection block 6, and the ear protection block 6 is positioned away from the positioning block 4. One side of the block 4 is fixedly connected with an ear blocking airbag 7, and the inside of the ear blocking airbag 7 is fixedly connected with an installation pipe, the installation pipe passes through the positioning block 4 and extends to the outside of the positioning block 4, and the inside of the installation pipe is slidably connected with a threaded block 10. , the outer side wall of the positioning block 4 is rotatably connected with a rotating sleeve 9, the interior of the rotating sleeve 9 is provided with an inner thread, and the inner side wall of the rotating sleeve 9 is threadedly connected with the outer side wall of the threaded block 10. Through the cooperation between the transmission mechanism and the positioning mechanism When the contact block 11 moves down, it will drive the two positioning blocks 4 to move relative to each other, and perform preliminary positioning of the patient's head, which is embodied in the three positions of the head, the ear and the chin on the side of the patient's head. The positioning effect is better and sufficient, which effectively solves the problem that the patient's head cannot be effectively positioned during the traditional treatment of liver cirrhosis and venous hypertension, and the movement of the head may cause the patient's body to move and cause deviation in the treatment, ensuring the accuracy of the patient's treatment. It should be noted that the sliding block 26 with a larger area can block the edge position of the exit of the sliding groove 14, so that when the sliding block 26 moves, the gas in the transmission pipe 13 can be squeezed to drive the positioning block 4 to move and position, Then, the ear blocking airbag 7 can be inflated to block the patient's ear after positioning by rotating the rotating sleeve 9. On the one hand, the surrounding of the patient can be quiet and the patient's nervousness can be relieved. On the other hand, the patient's ear can be prevented from being damaged during treatment. .

The interior of the placing plate 3 is provided with a connecting mechanism and a blowing mechanism, and the connecting mechanism includes an installation cavity 23 arranged inside the placing plate 3 , a second magnet block 25 is fixedly connected to the bottom of one positioning block 4 , and the interior of the installation cavity 23 is slidably connected There is a first magnetic block 24, the side of the first magnetic block 24 is fixedly connected with the first contact piece 22, the inner wall of the installation cavity 23 is fixedly connected with the driving motor 19, and the top of the driving motor 19 is fixedly connected with the second contact piece 21, The top of the second contact piece 21 is in sliding contact with the bottom of the first contact piece 22 , the side of the first contact piece 22 is externally powered, and the opposite surfaces of the first magnetic block 24 and the corresponding second magnetic block 25 are magnetically opposite.

The blowing mechanism includes a fan blade 20 that is fixedly sleeved on the output shaft of the drive motor 19, two air outlets 18 are arranged on the top of the placing plate 3, and a plurality of air guide grooves are arranged inside the positioning block 4. The other end extends to the side of the positioning block 4, and the inner wall of the air guide groove is fixedly connected with a ventilation pipe 8, and a plurality of ventilation pipes 8 are distributed on the side of the positioning block 4. The two positioning blocks 4 drive the first contact piece 22 and the second contact piece 21 to contact and energize when moving, and the energized drive motor 19 drives the fan blade 20 to rotate, and the rotating fan blade 20 passes the airflow through the air outlet 18 and conducts the air conduction. The groove enters the ventilation pipe 8 to discharge air, and naturally blows air around the patient's head, so that the patient's head is kept awake and cool, and the patient's tension is further relieved. It should be noted that the function of the first spring rod 15 For most patients, the head will be compressed to roughly the same position, so as to ensure that the air outlet 18 is connected to the air guide groove. In the case of deviation, the air outlet 18 and the air guide groove will also be partially connected to ensure ventilation. completion of the effect.

In the present invention, the patient to be treated lies on the support plate 2, the patient's head lies on the placement plate 3, and then the patient's body part is fixed and positioned by the positioning thermoplastic plate 5, and then the patient's head is positioned .

The patient's head lies on the contact block 11, and the weight of the patient's head drives the contact block 11 to press down. At this time, the first spring rod 15 is in a compressed state, and the moving contact block 11 drives the lower sides of the two connecting rods 12 to move, so that the The connecting rod 12 drives the sliding block 26 at the end of the connecting rod 12 to slide on the side wall of the sliding groove 14. As the connecting rod 12 squeezes the gas inside the transmission pipe 13, part of the gas flows out from the leaking sliding groove 14, and other gases flow out. The fixed block 17 is driven to move by the transmission tube 13, so that the two positioning blocks 4 are slowly approached to both sides of the patient's head until the patient's head presses the contact block 11 to the bottom, and the larger area of the sliding block 26 has already been covered. Hold the sliding groove 14 sliding on the side, so that the sliding block 26 that continues to move squeezes the gas in the transmission tube 13, so that the two positioning blocks 4 are closely attached to both sides of the patient's head. The thermoplastic plate 5 can be positioned on both the top and the chin of the patient's head, so that the patient's head is stabilized on the contact block 11, and then the doctor can turn the rotating sleeve 9, so that the rotating sleeve 9 drives the threaded block 10 inside the installation tube. Moving, the threaded block 10 squeezes the gas in the installation tube to inflate the ear blocking air bag 7, and the inflated ear blocking air bag 7 blocks the patient's ear, helping the patient to calm down.

At the same time, the moving positioning block 4 drives the second magnetic block 25 at the bottom of the positioning block 4 to move, the moving second magnetic block 25 drives the first magnetic block 24 inside the mounting cavity 23 to move, and the corresponding first contact piece 22 moves , when the contact block 11 is lowered to the lowest end, the first contact piece 22 and the second contact piece 21 inside the installation cavity 23 are in contact, so that the drive motor 19 is energized, and the working drive motor 19 drives the fan blade 20 to rotate. At this time, the moving The positioning block 4 is moved to the top of the air outlet 18, so that the air outlet 18 is communicated with the air guide groove, the rotating fan blade 20 conducts gas through the air outlet 18 and the air guide groove, and the air is discharged from the ventilation pipe 8 on the side of the positioning block 4 , to cool down both sides of the patient's head, help the patient to stabilize the state of mind, and finally, the patient can be treated with radiation therapy through the radiation therapy equipment 1.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (6)

1. A positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension, comprising a radiotherapy device (1) and a support plate (2) and a placement plate (3) positioned on the side of the radiotherapy device (1), characterized in that the described The support plate (2) is fixedly connected to the placement plate (3), the placement plate (3) is fixedly connected to the side surface of the radiotherapy device (1), and the top of the support plate (2) is provided with a removable positioning thermoplastic A plate (5), the top of the placement plate (3) is slidably connected with two vertically arranged positioning blocks (4), the top of the placement plate (3) is provided with a transmission mechanism and a positioning mechanism, and the placement plate (3) is provided with a transmission mechanism and a positioning mechanism. (3) There is a connecting mechanism and a blowing mechanism inside. 2 . The positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension according to claim 1 , wherein the transmission mechanism comprises a first spring rod ( 15 ) fixedly connected to the top of the placing plate ( 3 ), so that the The top of the first spring rod (15) is fixedly connected with an arc-shaped contact block (11), and both sides of the bottom of the contact block (11) are rotatably connected with connecting rods (12), and the placement plate (3) The top of the transmission tube (13) is fixedly connected with two "J" arranged transmission pipes (13), the semicircular position in the transmission pipe (13) is provided with a semicircularly arranged sliding groove (14) on the side, and the sliding groove (14) Both the inner and outer side walls of the sliding block (26) slide, and the two sliding blocks (26) are fixedly connected by a sliding shaft. One end of the connecting rod (12) away from the contact block (11) is rotatably connected with the side surface of the sliding block (26), the inner side wall of the transmission pipe (13) is fixedly connected with a second spring rod (16), the transmission pipe ( 13) A fixing block (17) is slidably connected to the inner side wall of one end away from the connecting rod (12), and the end of the fixing block (17) is fixedly connected to the side surface of the positioning block (4). 3 . The positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension according to claim 1 , wherein the opposite sides of the two positioning blocks ( 4 ) are arranged inward in an arc shape, and the positioning mechanism comprises: 4 . The positioning air cushion (27) is fixedly connected to the upper and lower sides of the positioning block (4), the middle part of the side surface of the positioning block (4) is fixedly connected with an ear protection block (6), and the ear protection block (6) is away from the positioning block (4) An ear-blocking airbag (7) is fixedly connected to one side of the ear-blocking airbag (7), and an installation pipe is fixedly connected to the inside of the ear-blocking airbag (7), and the installation pipe passes through the positioning block (4) and extends to the outside of the positioning block (4), A threaded block (10) is slidably connected to the inside of the installation pipe, a rotating sleeve (9) is rotatably connected to the outer side wall of the positioning block (4), and an inner thread is provided inside the rotating sleeve (9), and the The inner side wall of the rotating sleeve (9) is threadedly connected with the outer side wall of the threaded block (10). 4 . The positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension according to claim 1 , wherein the connecting mechanism comprises an installation cavity ( 23 ) provided inside the placing plate ( 3 ), wherein one of the A second magnetic block (25) is fixedly connected to the bottom of the positioning block (4), a first magnetic block (24) is slidably connected to the inside of the mounting cavity (23), and a side surface of the first magnetic block (24) is fixed A first contact piece (22) is connected, a drive motor (19) is fixedly connected to the inner side wall of the mounting cavity (23), and a second contact piece (21) is fixedly connected to the top of the drive motor (19), so The top of the second contact piece (21) is in sliding contact with the bottom of the first contact piece (22), and the side surface of the first contact piece (22) is connected to a power supply. 5 . The positioning device for interventional radiotherapy of liver cirrhosis and portal hypertension according to claim 4 , characterized in that the first magnetic block ( 24 ) and the corresponding second magnetic block ( 25 ) have opposite surface magnetic properties. 6. A positioning device for liver cirrhosis portal hypertension interventional radiotherapy according to claim 5, characterized in that the blowing mechanism comprises a fan blade (20) fixedly sleeved on the output shaft of the drive motor (19), The top of the placing plate (3) is provided with two air outlets (18), the interior of the positioning block (4) is provided with a plurality of air transmission guide grooves, and the other end of the air transmission guide groove extends to the positioning block (4), a ventilation pipe (8) is fixedly connected to the inner side wall of the air conduction groove, and a plurality of the ventilation pipes (8) are distributed on the side surface of the positioning block (4).

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