Postoperative affected limb braking device for hepatic artery chemoembolization

Abstract

The invention discloses a postoperative affected limb braking device for hepatic artery chemoembolization, and relates to the technical field of medical instruments. The device comprises a base plate frame, the base plate frame comprises a thigh base plate, two sliding rods are fixedly arranged on one side of the thigh base plate, a shank base plate slides on the two sliding rods, a first lead screw penetrates through the shank base plate in a threaded mode, and the free end of the first lead screw is rotationally connected with the thigh base plate; when a patient brakes the lower limb of the puncture side, the sole is limited through the twisting preventing mechanism, the lower limb is limited to be not twisted, the thigh and the shank of the lower limb are buckled and limited through the two position restraining mechanisms, the lower limb of the patient can be effectively braked and limited, the lower limb is limited to be not moved, and the lower limb of the patient can be effectively prevented from moving while effective limiting and braking are conducted. The lower limbs of the patient cannot be excessively pressed, so that the comfort of the lower limbs of the patient after braking is improved, the affected limbs cannot be moved unconsciously due to discomfort, then stable pressure is applied to the puncture point through the pressing mechanism for pressing, and it is guaranteed that the puncture opening of the patient is smoothly closed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a device for immobilizing the affected limb after hepatic artery chemoembolization. Background Technology

[0002] Hepatic artery chemoembolization (TACE) usually involves puncturing the femoral artery in the patient's groin, inserting a thin catheter, and guiding it to the site of the tumor in the liver using fluoroscopy with a digital subtraction angiography (DSA) machine. Doctors then inject anticancer drugs and embolic agents into the tumor artery in the liver through the catheter. After undergoing transarterial chemoembolization (TACE) for intermediate-to-advanced liver cancer, patients still require combined targeted therapy. Targeted therapy increases the risk of bleeding. Furthermore, strict immobilization of the puncture-side lower limb is necessary for 6-8 hours and absolute bed rest for 24 hours after TACE to prevent bleeding and hematoma formation at the puncture site. After femoral artery puncture, there is a physical tear in the vessel wall, allowing continuous blood leakage. Arterial pressure can reach 100 mmHg, making it more difficult for veins to close naturally. External force is used to counteract the arterial pressure, promoting platelet aggregation and fibrin sealing of the puncture site. Additionally, the groin area has high muscle activity, which can easily pull on the wound. Immobilization of the puncture-side lower limb (TACE is usually performed via the femoral artery (groin area), and post-operative compression of the puncture site is necessary for hemostasis; hip flexion, knee flexion, movement, and twisting of the lower limb increase femoral artery tension, potentially leading to bleeding or hematoma) ensures a smooth recovery for the patient. Currently, the commonly used clinical methods of sandbag compression and elastic bandage bandaging have certain shortcomings. Sandbags are prone to displacement and the compression effect is unstable. If the elastic bandage is too tight, the patient will experience strong discomfort due to prolonged immobilization. If the elastic bandage is too loose, the patient may move the affected limb unconsciously, which will increase the risk of bleeding at the puncture site. Therefore, this invention proposes an immobilization device for the affected limb after hepatic artery chemoembolization. Summary of the Invention

[0003] The purpose of this invention is to address the problems mentioned above in the background art by providing a device for immobilizing the affected limb after hepatic artery chemoembolization.

[0004] To achieve the above objectives, the present invention specifically adopts the following technical solution: Immobilization devices for the affected limb after hepatic artery chemoembolization include: The pad frame includes a thigh pad, two slide rods are fixed on one side of the thigh pad, and a calf pad slides on the two slide rods. A first lead screw is threaded through the calf pad and the free end of the first lead screw is rotatably connected to the thigh pad. An anti-torsion mechanism includes a support plate set on a calf pad, a plurality of sleeves arranged in an array on the support plate, a support rod movably passing through the sleeves, a limiting plate fixed on the support rod, a limiting spring sleeved on the support rod and installed between the limiting plate and the inner wall of the sleeve, and a latex head fixed at one end of the support rod. Two binding mechanisms are respectively set on the thigh pad and the calf pad. The binding mechanism includes an arc-shaped base and an arc-shaped cover plate that are hinged together and fixed by a locking fastener. The inner walls of the arc-shaped base and the arc-shaped cover plate are provided with airbag rings. A compression mechanism, located on the thigh pad, is used to apply stable pressure to the puncture site.

[0005] Furthermore, the support plate is hinged to the calf pad, the calf pad is fixedly provided with an adjustment frame, the adjustment frame is provided with an arc-shaped groove, the support plate is fixedly provided with a first screw, the free end of the first screw is movably passed through the arc-shaped groove and threaded with a first knob.

[0006] Furthermore, a spherical groove is provided through the support plate, a spherical shell is fixed on the sleeve and the spherical shell is rotatably inserted into the spherical groove, and a fixing member for fixing the sleeve is provided on the support plate.

[0007] Furthermore, the fixing component includes a first connecting sleeve hinged to the support plate, a second lead screw threaded through the first connecting sleeve, a horizontal plate fixed on a plurality of sleeves located in the same horizontal row, a connecting rod hinged between two adjacent horizontal plates, a second connecting sleeve hinged on one of the horizontal plates, and the end of the second lead screw rotatably connected to the second connecting sleeve.

[0008] Furthermore, the airbag ring includes a first arc-shaped tube and a second arc-shaped tube respectively fixed to the inner wall of the arc-shaped base and the arc-shaped cover plate. A flexible tube connects the first arc-shaped tube and the second arc-shaped tube. Several airbag sleeves are connected to the first arc-shaped tube and the second arc-shaped tube through branch pipes. An air filling device is connected to the free end of the first arc-shaped tube, and a valve is connected to the free end of the second arc-shaped tube.

[0009] Furthermore, the gas filling component includes two end plates, a corrugated sleeve is connected between the two end plates, a return spring is connected between the two end plates and inside the corrugated sleeve, two conduits are connected to one of the end plates and a one-way valve is provided inside the conduit, and one of the conduits is connected to the free end of the first arc-shaped pipe.

[0010] Furthermore, the compression mechanism includes a bracket mounted on the thigh pad, a third lead screw threaded through the bracket, and a pressure plate rotatably connected to the end of the third lead screw.

[0011] Furthermore, the bracket includes a base and a panel. The thigh pad has a sliding groove. The base has a slider that is slidably inserted into the sliding groove. A fourth lead screw is threaded through the thigh pad and its end is rotatably connected to the base. The base has a T-shaped groove. The panel has a T-shaped block that is tightly inserted into the T-shaped groove. The third lead screw is located on the panel.

[0012] Furthermore, the panel is constructed with an arc-shaped plate, and an adjustment groove is formed through the panel. An adjustment plate is slidably disposed in the adjustment groove, and a second screw is fixedly disposed on the adjustment plate. The free end of the second screw moves through the adjustment groove and is threaded with a second knob.

[0013] Furthermore, the thigh pad is provided with a telescopic rod, the free end of which is connected to a U-shaped plate, a fifth lead screw is threaded through the U-shaped plate, and the free end of the fifth lead screw is rotatably connected to a fixing plate.

[0014] The beneficial effects of this invention are as follows: 1. In this invention, when the patient is immobilized on the puncture side of the lower limb, the anti-twist mechanism limits the foot, preventing the lower limb from twisting. Then, two binding mechanisms fasten and limit the lower leg, effectively immobilizing and restricting the patient's lower limb, preventing it from moving. While effectively limiting and immobilizing, the lower limb is not excessively compressed, thus improving the patient's comfort after immobilization and preventing the patient from unconsciously moving the affected limb due to discomfort. Then, a compression mechanism applies stable pressure to the puncture point to ensure smooth closure of the puncture site.

[0015] 2. In this invention, the support plate can be rotated, adjusted, and fixed around the hinge point, and the sleeve can also be rotated, adjusted, and fixed around the hinge point, so that when the support plate is fixed at a certain angle, the support rod and the sleeve always remain in a horizontal state, which allows for more comfortable anti-torsion limiting of the patient's lower limbs.

[0016] 3. In this invention, the limb is initially limited by the fastening of the arc-shaped base and the arc-shaped cover plate. Then, the airbag sleeve is inflated by the air-filling component, thereby pressing against the patient's limb. This can effectively compress and limit the patient's limb. While compressing and limiting, it can also improve the comfort of the limb. Several airbag sleeves are distributed in a ring, which further improves the stability of the limiting and fixing.

[0017] 4. In this invention, the structure of the bracket allows for adjustment of the downward pressure position of the pressure plate in multiple directions. The base sliding is one direction, the panel sliding is another direction, and the downward movement of the pressure plate is yet another direction, ensuring that the pressure plate can precisely compress and stop bleeding at the puncture point. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the anti-torsion mechanism of the present invention; Figure 3 This is another perspective three-dimensional structural diagram of the anti-torsion mechanism of the present invention; Figure 4 This is a three-dimensional structural cross-sectional view of the anti-torsion mechanism of the present invention; Figure 5 This is the present invention. Figure 4 Enlarged view of point A in the middle; Figure 6 This is a three-dimensional structural diagram of the beam positioning mechanism of the present invention; Figure 7 This is another three-dimensional structural diagram of the beam positioning mechanism of the present invention; Figure 8 This is a three-dimensional sectional view of the beam positioning mechanism of the present invention; Figure 9 This is a three-dimensional structural diagram of the compression mechanism of the present invention; Figure 10 This is a three-dimensional sectional view of the compression mechanism of the present invention; Figure 11 This is a three-dimensional structural diagram of the pad frame of the present invention.

[0019] Reference numerals: 1. Pad frame; 2. Anti-torsion mechanism; 3. Positioning mechanism; 4. Compression mechanism; 5. Adjusting frame; 6. Arc-shaped groove; 7. First screw; 8. First knob; 9. Spherical groove; 10. Spherical shell; 11. Fixing component; 12. Adjusting groove; 13. Adjusting plate; 14. Second screw; 15. Second knob; 16. Telescopic rod; 17. U-shaped plate; 18. Fifth lead screw; 19. Fixing plate; 101. Thigh pad; 102. Slide rod; 103. Lower leg pad; 104. First lead screw; 201. Support plate; 202. Sleeve; 203. Support rod; 204. Limiting plate; 205. Limiting spring; 206. Latex head; 301. Arc-shaped bottom 302. Seat; 303. Arc-shaped cover plate; 303. Airbag ring; 3031. First arc-shaped tube; 3032. Second arc-shaped tube; 3033. Hose; 3034. Airbag sleeve; 3035. Air filling component; 30351. End plate; 30352. Corrugated soft sleeve; 30353. Return spring; 30354. Conduit; 401. Bracket; 402. Third lead screw; 403. Pressure plate; 4011. Base; 4012. Panel; 4013. Fourth lead screw; 4014. T-slot; 4015. T-block; 1101. First connecting sleeve; 1102. Second lead screw; 1103. Horizontal plate; 1104. Connecting rod; 1105. Second connecting sleeve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] like Figures 1-11 As shown, an embodiment of the present invention provides a limb immobilization device after hepatic artery chemoembolization, comprising: The pad frame 1 includes a thigh pad 101, with two sliding rods 102 fixed on one side. A calf pad 103 slides on the two sliding rods 102. A first lead screw 104 is threaded through the calf pad 103, and the free end of the first lead screw 104 is rotatably connected to the thigh pad 101. When immobilization is performed after hepatic artery chemoembolization, the pad frame 1 is placed on the hospital bed, and the lower limb on the puncture side is placed on the pad frame 1. The thigh pad 101 and the calf pad 103 are used to place the thigh and the calf, respectively. By twisting the first lead screw 104, the calf pad 103 slides along the two sliding rods 102 under the action of the thread, thereby adjusting the distance between the thigh pad 101 and the calf pad 103 to accommodate the lower limb. The anti-torsion mechanism 2 includes a support plate 201 mounted on the calf pad 103. Several sleeves 202 are arrayed and connected on the support plate 201. A support rod 203 is movably inserted through each sleeve 202. A limiting plate 204 is fixedly mounted on the support rod 203. A limiting spring 205, sleeved on the support rod 203, is installed between the limiting plate 204 and the inner wall of the sleeve 202. One end of the support rod 203 has a latex head 206 fixedly mounted. In the initial state, under the elastic force of the limiting spring 205, the support rod 203 protrudes from the sleeve 202. When adjusting the calf pad 103 closer to the thigh pad 101, the patient's foot contacts part of the support rod 203, thereby forcing the support rod 203 to retract into the sleeve 202. Once the patient's foot is in contact with the support plate 201, the adjustment of the calf pad 103 stops. It should be noted that... Yes, the limiting spring 205 has a very small elastic force. It is only used to ensure that the support rod 203 can effectively protrude from the sleeve 202 in the initial state. When the patient's foot touches the support rod 203, it can easily and smoothly retract the support rod 203 into the sleeve 202 without applying too much resistance to the patient's foot. At the same time, a latex head 206 is fixed at the end of the support rod 203. The patient's foot contacts the latex head 206, thereby improving the comfort of the patient's foot. Since there are several sleeves 202 and support rods 203 arranged in an array, they can adapt to the size of the patient's foot. The part of the support rod 203 that contacts the patient's foot will retract into the sleeve 202, while the rest of the support rod 203 will always remain protruding, thereby limiting the patient's foot and preventing the patient's lower limb from twisting. Two positioning mechanisms 3 are respectively installed on the thigh pad 101 and the calf pad 103. Each positioning mechanism 3 includes a hinged arc-shaped base 301 and an arc-shaped cover 302. Preferably, the arc-shaped base 301 is fixed to either the thigh pad 101 or the calf pad 103, and the two are fastened together by a locking mechanism. An airbag ring 303 is provided on the inner wall of both the arc-shaped base 301 and the arc-shaped cover 302. When the patient places their lower limb, the arc-shaped cover 302 is in the open state. After the patient's limb is placed inside the arc-shaped base 301, the arc-shaped cover 302 is fastened to the arc-shaped base 301, and then the arc-shaped cover 302 and the arc-shaped base 301 are fixed together by the locking mechanism. The airbag ring is located on the inner wall of the arc-shaped base 301 and the arc-shaped cover 302. The component 303 prevents the patient's limb from directly contacting the arc-shaped base 301 and the arc-shaped cover plate 302. At the same time, the cooperation between the arc-shaped base 301 and the arc-shaped cover plate 302 does not rigidly resist and fix the patient's lower limb. Because the patient's foot is limited by the anti-torsion mechanism 2, the lower limb cannot be twisted. The cooperation between the arc-shaped base 301 and the arc-shaped cover plate 302 restricts the patient's lower limb from lateral movement, lifting, and bending. The cooperation between the anti-torsion mechanism 2 and the restraint mechanism 3 ensures that the affected limb remains in an extended position. While ensuring effective restraint and braking of the patient's lower limb, it does not excessively compress the patient's lower limb, thereby improving the patient's comfort. This results in better comfort during long-term braking, and the patient will not move or twist their lower limb due to discomfort, thus ensuring the braking effect. The compression mechanism 4 is set on the thigh pad 101. It is used to apply stable pressure to the puncture point. Since the patient's lower limb is effectively limited and braked by the anti-torsion mechanism 2 and the two compression mechanisms 4, the patient's lower limb cannot move and is not easy to pull the wound. The compression mechanism 4 only applies stable pressure to the patient's puncture point, while reducing the pressure on the tissue around the puncture point, thereby improving comfort and the overall practicality of the braking device. In this procedure, when the patient's lower limb on the puncture side is immobilized, the anti-twist mechanism 2 limits the foot, preventing the lower limb from twisting. Then, two binding mechanisms 3 fasten and limit the lower leg, effectively immobilizing and restricting the patient's lower limb from moving. While effectively limiting and immobilizing, the procedure avoids excessive pressure on the patient's lower limb, thus improving the patient's comfort after immobilization and preventing involuntary movement of the affected limb due to discomfort. Finally, the compression mechanism 4 applies stable pressure to the puncture site to ensure smooth closure of the puncture site.

[0022] like Figure 2As shown, a further technical solution for the support plate 201 of the present invention is disclosed. The support plate 201 is hinged to the calf pad 103. An adjustment frame 5 is fixed on the calf pad 103, and an arc-shaped groove 6 is formed through the adjustment frame 5. A first screw 7 is fixed on the support plate 201. The free end of the first screw 7 moves through the arc-shaped groove 6 and is threaded with a first knob 8. Preferably, the center of the arc-shaped groove 6 and the hinge point of the support plate 201 are located on the same axis. By hinged, the support plate 201 can be rotated around the hinge point. The patient moves the support plate 201 to adjust its orientation so that the foot can maintain a certain degree of natural tilt when the patient is in an extended position (it should be noted that maintaining a certain degree of natural tilt of the foot can improve comfort, but the lower limbs are in an extended position). When adjusting the support plate 201, the first screw 7 slides in the arc groove 6. After the angle of the support plate 201 is adjusted, the first knob 8 is turned so that the first knob 8 presses against the adjustment frame 5. The friction of the contact is used to fix the support plate 201.

[0023] like Figure 5 As shown, a further technical solution for the sleeve 202 of the present invention is disclosed. A spherical groove 9 is provided through the support plate 201. A spherical shell 10 is fixed on the sleeve 202 and is rotatably inserted into the spherical groove 9. A fixing member 11 for fixing the sleeve 202 is provided on the support plate 201. Preferably, the spherical groove 9 has tapered flares on both sides. The inner diameter of the side with the smaller opening of the tapered flare is smaller than the diameter of the spherical shell 10. Therefore, the spherical shell 10 can roll in the spherical groove 9, but cannot detach. The spherical groove 9, the spherical shell 10 and the spherical groove 9 cooperate to form a spherical hinge, so that the sleeve 202 can rotate around the hinge point at a certain angle. The tapered flare design is used to increase the rotation range of the sleeve 202. By hinged setting of the sleeve 202, when the support plate 201 is adjusted at a certain tilt angle, the sleeve 202 and the support rod 203 still remain in a horizontal state. Then, the sleeve 202 is fixed by the fastener 11, so that the support rod 203 can more effectively prevent the torsion of the foot.

[0024] like Figure 2 and Figure 3 As shown, the specific structure of the fixing member 11 of the present invention is disclosed. The fixing member 11 includes a first connecting sleeve 1101 hinged to the support plate 201, a second lead screw 1102 threaded through the first connecting sleeve 1101, and a horizontal plate 1103 fixed on a plurality of sleeves 202 located in the same horizontal row. A connecting rod 1104 is hinged between two adjacent horizontal plates 1103. A second connecting sleeve 1105 is hinged on one of the horizontal plates 1103. The end of the second lead screw 1102 is rotatably connected to the second connecting sleeve 1105. Figure 2 and Figure 3As shown, the sleeves 202 are arranged in an array, and horizontal plates 1103 are fixed on several sleeves 202 in the same horizontal row, so that there are several horizontal plates 1103 and several horizontal plates 1103 are equally distributed. A connecting rod 1104 is hinged between two adjacent horizontal plates 1103 (it should be noted that the distance between the two hinge points of the connecting rod 1104 is equal to the distance between two adjacent spherical grooves 9). Therefore, when one horizontal plate 1103 is moved, the other horizontal plates 1103 can be moved, so that if The first sleeve 202 rotates in unison, and the second connecting sleeve 1105 is hinged to the uppermost horizontal plate 1103. Since both the first connecting sleeve 1101 and the second connecting sleeve 1105 are hinged, turning the second lead screw 1102 can rotate and move the sleeves 202 synchronously. The threaded engagement between the second lead screw 1102 and the first connecting sleeve 1101 has self-locking properties. Therefore, adjusting the rotation of the sleeve 202 can lock it, thereby fixing the sleeve 202.

[0025] like Figure 6 and Figure 7 As shown, the specific structure of the airbag ring 303 of the present invention is disclosed. The airbag ring 303 includes a first arc-shaped tube 3031 and a second arc-shaped tube 3032 respectively fixed to the inner walls of the arc-shaped base 301 and the arc-shaped cover plate 302. Preferably, the first arc-shaped tube 3031 and the second arc-shaped tube 3032 are rigid tubes (iron pipes). A flexible tube 3033 is connected between the first arc-shaped tube 3031 and the second arc-shaped tube 3032. The flexible tube 3033 is a plastic tube. A plurality of airbag sleeves 3034 are connected to the first arc-shaped tube 3031 and the second arc-shaped tube 3032 through branch pipes. One outer wall of the airbag sleeve 3034 is fixedly connected to the inner wall of the arc-shaped base 301 or the arc-shaped cover plate 302. An air filling component 3035 is connected to the free end of the first arc-shaped tube 3031. A valve is connected to the free end of the second arc-shaped tube 3032. After the arc-shaped cover plate 302 is fastened and fixed, the valve on the second arc-shaped tube 3032 is closed, and air is added to the first arc-shaped tube 3031 through the air-injector 3035. Through the connection between the hose 3033 and the second arc-shaped tube 3032, the air is added to several airbag sleeves 3034, causing the airbag sleeves 3034 to inflate and thus press against the patient's limb. Since the limbs of different patients are different in size and at different positions, the airbag sleeves 3034 can be effectively compressed and limited by adding air, which can improve the comfort of the limb while compressing and limiting it. The several airbag sleeves 3034 are distributed in a ring, which further improves the stability of the limiting and fixing.

[0026] like Figure 8The specific structure of the gas filling component 3035 of the present invention is disclosed. The gas filling component 3035 includes two end plates 30351, and a corrugated sleeve 30352 is connected between the two end plates 30351. A return spring 30353 is connected between the two end plates 30351 and inside the corrugated sleeve 30352. Two conduits 30354 are connected to one of the end plates 30351, and a one-way valve is provided inside the conduit 30354. One of the conduits 30354 is connected to the free end of the first arc-shaped tube 3031. Preferably, in the initial state, under the elastic force of the return spring 30353, the corrugated sleeve 30352 is in an extended state, that is, the two end plates 30351 are in a state of being far apart from each other. When filling gas, the two end plates are pressed. The 30351 tubes approach each other and compress the return spring 30353, thereby transporting the air inside the corrugated sleeve 30352 through one of the conduits 30354 to the first arc-shaped tube 3031. Then, the return spring 30353 returns to its original position. During the return process, the other conduit 30354 replenishes the corrugated sleeve 30352 with outside air. After pressing the end plate 30351 multiple times and returning to its original position with the spring force of the return spring 30353, under the action of the two one-way valves, the outside gas is first drawn into the corrugated sleeve 30352, and then the air inside the corrugated sleeve 30352 is transported to the first arc-shaped tube 3031, thereby achieving the function of adding gas. No energy equipment such as an air pump is required during the gas adding process, thus improving practicality.

[0027] like Figure 9 and Figure 10 As shown, the specific structure of the compression mechanism 4 of the present invention is disclosed. The compression mechanism 4 includes a bracket 401 disposed on a thigh pad 101. A third lead screw 402 is threaded through the bracket 401. A pressure plate 403 is rotatably connected to the end of the third lead screw 402. When the patient's lower limb is placed on the thigh pad 101, the root of the thigh is located just below the bracket 401. By twisting the third lead screw 402 to rotate and move, the pressure plate 403 is moved downward, thereby compressing the puncture point to stop bleeding. Since the third lead screw 402 and the bracket 401 are threadedly engaged and have self-locking properties, the compression force can be controlled according to the degree of twisting the third lead screw 402. After adjustment, it can self-lock, thereby providing a stable compression force. Moreover, the pressure plate 403 only compresses the puncture point and does not compress the skin tissue around the puncture point.

[0028] like Figure 9 and Figure 10As shown, a further technical solution for the support 401 of the present invention is disclosed. The support 401 includes a base 4011 and a panel 4012. A groove is provided on the thigh pad 101. A slider is constructed on the base 4011 and is slidably inserted into the groove. A fourth lead screw 4013 is threaded through the thigh pad 101 and its end is rotatably connected to the base 4011. A T-shaped groove 4014 is provided on the base 4011. A T-shaped block 4015 is constructed on the panel 4012 and is tightly inserted into the T-shaped groove 4014. A third lead screw 402 is located on the panel 4012. The support 401 is composed of the base 4011 and the panel 4012, allowing the patient's limb to be placed upright on the base 4011, further improving convenience. After the limb is placed, it is slid into place by the T-shaped groove 4014 and the T-shaped block 4012. The tight insertion of the T-block 4015 and T-groove 4014, combined with the downward pressure of the pressure plate 403, allows the panel 4012 to be mounted on the base 4011. Since the limb is already restrained and fixed, the tight insertion of the T-block 4015 and T-groove 4014, along with the downward pressure of the pressure plate 403, ensures the stability of the panel 4012 and the stability of the compression. The base 4011 is slidably placed on the thigh pad 101, and the third screw 402 is twisted to adjust its sliding position. The tight insertion of the T-block 4015 and T-groove 4014 also allows for the sliding adjustment of the panel 4012. This allows for multiple directional adjustments to the downward position of the pressure plate 403 (the sliding of the base 4011 is one direction, the sliding of the panel 4012 is another direction, and the downward movement of the pressure plate 403 is yet another direction), ensuring that the pressure plate 403 can precisely compress and stop bleeding at the puncture point.

[0029] like Figure 9 and Figure 10 As shown, a further technical solution for panel 4012 of the present invention is disclosed. Panel 4012 is constructed with an arc-shaped plate, and an adjustment groove 12 is provided through the panel 4012. An adjustment plate 13 is slidably disposed in the adjustment groove 12. A second screw 14 is fixedly disposed on the adjustment plate 13. The free end of the second screw 14 movably passes through the adjustment groove 12 and is threadedly fitted with a second knob 15. Since the puncture point is usually located in the femoral artery below the inguinal ligament, and the thigh is not flat but has a certain curvature, by constructing panel 4012 as an arc-shaped plate, the adjustment plate 13... It is also constructed as an arc-shaped block, with an adjustment groove 12 opened on the panel 4012. The adjustment plate 13 is slidably inserted into the adjustment groove 12, so that the adjustment plate 13 can slide in an arc on the panel 4012, so that the pressure plate 403 can accurately compress and stop bleeding at the actual puncture point. When the adjustment plate 13 slides, the second screw 14 slides along the adjustment groove 12. After the adjustment plate 13 is slid and adjusted, the second knob 15 is turned, so that the second knob 15 presses against the panel 4012. By using the friction of the contact, the adjustment plate 13 is fixed.

[0030] like Figure 11 As shown, a further technical solution of the present invention for the thigh pad 101 is disclosed. The thigh pad 101 is provided with a telescopic rod 16, and a U-shaped plate 17 is connected to the free end of the telescopic rod 16. Preferably, the telescopic rod 16 includes an outer rod and an inner rod. The outer rod is fixedly mounted on the thigh pad 101, and the inner rod is slidably inserted into the outer rod. The U-shaped plate 17 is fixedly mounted on the end of the inner rod. A plurality of threaded grooves are arrayed on the inner rod. A locking rod movably passes through the outer rod, and the locking rod is threadedly engaged with the threaded grooves. The U-shaped plate 17 is threaded... A fifth lead screw 18 passes through the bed, and a fixed plate 19 is rotatably connected to the free end of the fifth lead screw 18. When the pad frame 1 is placed on the hospital bed, the length of the telescopic rod 16 is adjusted and fixed, so that the U-shaped plate 17 is fastened to the edge of the bed. Then, the fifth lead screw 18 is twisted and rotated, so that the fixed plate 19 is pressed against the edge of the bed board. By using the frictional force of the contact, the fixed plate 19 is fixed to the bed board, thereby fixing the pad frame 1 and further improving the stability of the braking.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A limb immobilization device after hepatic artery chemoembolization, characterized in that, include: The pad frame (1) includes a thigh pad (101), two slide rods (102) are fixed on one side, and a calf pad (103) slides on the two slide rods (102). A first lead screw (104) is threaded through the calf pad (103) and the free end of the first lead screw (104) is rotatably connected to the thigh pad (101). The anti-torsion mechanism (2) includes a support plate (201) set on the lower leg pad (103), a plurality of sleeves (202) are arrayed and connected on the support plate (201), a support rod (203) is movably passed through the sleeve (202), a limiting plate (204) is fixed on the support rod (203), a limiting spring (205) sleeved on the support rod (203) is installed between the limiting plate (204) and the inner wall of the sleeve (202), and a latex head (206) is fixed at one end of the support rod (203). Two binding mechanisms (3) are respectively set on the thigh pad (101) and the calf pad (103). The binding mechanism (3) includes an arc-shaped base (301) and an arc-shaped cover plate (302) that are hinged together and are fastened by a locking member. The inner walls of the arc-shaped base (301) and the arc-shaped cover plate (302) are provided with airbag rings (303). A compression mechanism (4) is provided on the thigh pad (101) for applying stable pressure to the puncture point.

2. The limb immobilization device after hepatic artery chemoembolization according to claim 1, characterized in that, The support plate (201) is hinged to the calf pad (103). An adjustment frame (5) is fixed on the calf pad (103). An arc groove (6) is opened through the adjustment frame (5). A first screw (7) is fixed on the support plate (201). The free end of the first screw (7) moves through the arc groove (6) and is threaded with a first knob (8).

3. The limb immobilization device after hepatic artery chemoembolization according to claim 2, characterized in that, A spherical groove (9) is provided through the support plate (201), and a spherical shell (10) is fixed on the sleeve (202) and the spherical shell (10) is rolled and inserted into the spherical groove (9). A fixing member (11) for fixing the sleeve (202) is provided on the support plate (201).

4. The limb immobilization device after hepatic artery chemoembolization according to claim 3, characterized in that, The fixing component (11) includes a first connecting sleeve (1101) hinged on the support plate (201), a second lead screw (1102) threaded through the first connecting sleeve (1101), a horizontal plate (1103) fixed on a plurality of sleeves (202) located in the same horizontal row, a connecting rod (1104) hinged between two adjacent horizontal plates (1103), a second connecting sleeve (1105) hinged on one of the horizontal plates (1103), and the end of the second lead screw (1102) rotatably connected to the second connecting sleeve (1105).

5. The limb immobilization device after hepatic artery chemoembolization according to claim 1, characterized in that, The airbag ring (303) includes a first arc-shaped tube (3031) and a second arc-shaped tube (3032) respectively fixed on the inner walls of the arc-shaped base (301) and the arc-shaped cover plate (302). A hose (3033) is connected between the first arc-shaped tube (3031) and the second arc-shaped tube (3032). Several airbag sleeves (3034) are connected to the first arc-shaped tube (3031) and the second arc-shaped tube (3032) through branch pipes. An air filling device (3035) is connected to the free end of the first arc-shaped tube (3031), and a valve is connected to the free end of the second arc-shaped tube (3032).

6. The limb immobilization device after hepatic artery chemoembolization according to claim 5, characterized in that, The gas filling component (3035) includes two end plates (30351), a corrugated sleeve (30352) is connected between the two end plates (30351), a return spring (30353) is connected between the two end plates (30351) and inside the corrugated sleeve (30352), two conduits (30354) are connected to one of the end plates (30351), and a one-way valve is provided inside the conduit (30354), and one of the conduits (30354) is connected to the free end of the first arc-shaped pipe (3031).

7. The limb immobilization device after hepatic artery chemoembolization according to claim 1, characterized in that, The compression mechanism (4) includes a bracket (401) mounted on a thigh pad (101), a third lead screw (402) threaded through the bracket (401), and a pressure plate (403) rotatably connected to the end of the third lead screw (402).

8. The limb immobilization device after hepatic artery chemoembolization according to claim 7, characterized in that, The bracket (401) includes a base (4011) and a panel (4012). The thigh pad (101) has a groove. The base (4011) has a slider that is slidably inserted into the groove. The thigh pad (101) has a threaded fourth lead screw (4013) that is rotatably connected to the base (4011). The base (4011) has a T-shaped groove (4014). The panel (4012) has a T-shaped block (4015) that is tightly inserted into the T-shaped groove (4014). The third lead screw (402) is located on the panel (4012).

9. The limb immobilization device after hepatic artery chemoembolization according to claim 8, characterized in that, The panel (4012) is constructed with an arc-shaped plate. An adjustment groove (12) is provided through the panel (4012). An adjustment plate (13) is slidably arranged in the adjustment groove (12). A second screw (14) is fixedly provided on the adjustment plate (13). The free end of the second screw (14) moves through the adjustment groove (12) and is threaded with a second knob (15).

10. The limb immobilization device after hepatic artery chemoembolization according to claim 1, characterized in that, The thigh pad (101) is provided with a telescopic rod (16), the free end of the telescopic rod (16) is connected to a U-shaped plate (17), a fifth lead screw (18) is threaded through the U-shaped plate (17), and a fixed plate (19) is rotatably connected to the free end of the fifth lead screw (18).

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