Body position placing device for knee joint injection patient

Abstract

The invention discloses a knee joint injection patient body position placing device, and relates to the technical field of medical instruments, the knee joint injection patient body position placing device comprises a supporting plate, a lifting assembly is arranged on one side of the top surface of the supporting plate, the lifting assembly comprises a first lead screw, two lower supporting plates and two upper supporting plates, the first lead screw is rotatably arranged above the supporting plate, and the lower supporting plates and the upper supporting plates are rotatably arranged on the supporting plate; the two lower supporting plates are fixedly connected to the top face of the supporting plate, the two upper supporting plates are fixedly connected to the two ends of the bottom face of the bearing platform plate, the lower supporting plates and the upper supporting plates are arranged in an up-down corresponding mode, and a moving assembly is arranged on the supporting plate. The knee joint injection patient body position placing device has the advantages that a medical worker does not need to manually lift the legs of a patient and keep the thighs and the shanks at a certain bending angle, the operation difficulty is lowered, the knee joint injection efficiency is improved, the body position of the legs of the patient is limited, and the patient can conveniently and rapidly place the body position. The body position change of the patient due to pain during injection is avoided, and the technical effect of knee joint injection effect is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a patient positioner for knee joint injection. Background Art

[0002] Arthrocentesis of the knee is often used to examine the nature of the fluid effusion in the joint cavity, or to inject medication into the joint cavity after drawing the fluid.

[0003] When performing a knee joint injection, the knee joint injection point is taken on the outer side below the patella. The patient needs to lie on his back and then adjust the injection position. Especially when injecting with the joint slightly flexed, the bending angle between the thigh and the calf needs to be ensured, thereby ensuring the size of the medial or lateral joint space of the patellar ligament. The patient's position plays a great role in the results of the puncture.

[0004] Currently, when performing a knee joint injection, the medical staff positions the patient's legs and then performs the injection. During the injection, the medical staff needs to control the patient's legs while performing the injection, which is difficult and inefficient. In addition, the patient will react to the pain and change his body position, thus affecting the puncture effect. Summary of the invention

[0005] The invention discloses a patient positioner for knee joint injection, aiming to solve the technical problems that medical staff need to control the patient's legs while performing the injection, which is difficult to operate and inefficient, and the patient will react to the pain and change his body position, thus affecting the puncture effect.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A patient positioning device for knee joint injection comprises a support plate, a lifting assembly is arranged on one side of the top surface of the support plate, the lifting assembly comprises a screw rod 1, a lower support plate and an upper support plate, the screw rod 1 is rotatably arranged above the support plate, two of the lower support plates and two of the upper support plates are arranged, the two lower support plates are fixedly connected to the top surface of the support plate, the two upper support plates are fixedly connected to the two ends of the bottom surface of the supporting plate, the lower support plate and the upper support plate are arranged correspondingly above and below, a supporting plate is arranged above the screw rod 1, a leg bracket is arranged on one side above the supporting plate, a moving assembly is arranged on the support plate, the moving assembly comprises a foot pedal, and the foot pedal is slidably arranged on the surface of the support plate.

[0007] By providing a support plate, a lifting component, a base plate, a leg support, and a moving component, the device is placed under the patient's legs, the patient's feet are limited by the moving component, and the lifting component is adjusted to make the patient's thigh and calf form a certain angle, and then the patient's knee joint injection can be performed. Medical staff do not need to manually lift the patient's legs and maintain the thigh and calf at a certain bending angle, which reduces the difficulty of operation and improves the injection efficiency of the knee joint. At the same time, the patient's leg position can be limited to avoid the patient's position change due to pain during injection, thereby ensuring the effect of knee joint injection.

[0008] In a preferred embodiment, the bottom surface of the leg bracket is fixedly connected with a pressure-absorbing pad, the bottom surface of the pressure-absorbing pad is fixedly connected to the top surface of the supporting plate, the leg bracket is arranged in a concave structure, and the inner wall of the bottom surface of the leg bracket is fixedly connected with a protective pad; the outer walls on both sides of the leg bracket are fixedly connected with a fixed plate, the outer end of the bottom surface of the fixed plate is fixedly connected with a plurality of elastic rods distributed in an array, and the bottom surface of the fixed plate is fixedly connected with a movable rod, and the top surface of the supporting plate is fixedly connected with a movable seat, and the movable rod is slidably arranged inside the movable seat.

[0009] By providing a pressure-relieving pad, a protective pad, a fixing plate, an elastic rod, a movable rod and a movable seat, the patient's thigh and calf joints are placed on the protective pad, making the patient more comfortable. The pressure-relieving pad forms a buffer, and the fixing plate exerts pressure on the elastic rod to form a further buffer, thereby avoiding injuries to the patient's legs when placed, thereby improving safety.

[0010] In a preferred embodiment, the surface of the screw rod 1 is threadedly connected to a moving seat, and the outer walls on both sides of the moving seat are fixedly connected to a connecting rod, and a sliding groove is opened inside the two lower support plates, and the ends of the two connecting rods away from each other are fixedly connected to a lower sliding block, and the lower sliding block is slidably arranged inside the sliding groove; the ends of the two connecting rods away from each other are rotatably provided with a steering plate 1, and a steering plate 2 is arranged on the outer wall of the steering plate 1. The steering plate 1 and the steering plate 2 are arranged in an X-shaped structure, and the intersection of the steering plate 1 and the steering plate 2 is rotatably connected by a rotating shaft rod, and the bottom surface of the supporting plate is fixedly connected to an upper fixed rod, and the ends of the two steering plates 1 away from the connecting rod are rotatably connected to the two ends of the circumferential surface of the upper fixed rod; the side wall of the steering plate 2 close to the supporting plate is fixedly connected to the upper sliding block, and the upper support plate The gear train is constituted of a pair of gears, each of which is engaged with a pair of gears and is fixedly connected to a pair of gears on one side of the gear train, the gears being arranged on the side of the gear train being engaged with the gears and being connected to a pair of gears on the other side of the gear train.

[0011] By providing a lifting component, the medical staff turns the hand crank to raise the height of the leg support, driving the patient's thigh to move upward, and the angle between the calf and the support plate gradually increases.

[0012] In a preferred embodiment, the moving assembly includes gear three, which is fixedly connected to the surface of the screw rod one, and is arranged between the gear one and the shaft seat bracket, the surface of the gear three is meshed with the synchronous belt two, the inner wall of the synchronous belt two is meshed with the gear four, and the gear three and the gear four are arranged at the two ends of the synchronous belt two; the outer wall of the gear four close to the support plate is fixedly connected to a connecting rod, and the end of the connecting rod away from the gear four is fixedly connected to a worm, and the top surface of the support plate is provided with a moving groove, and a worm wheel is arranged inside the moving groove for rotation, and the worm wheel The rod is meshed with the worm gear, and the top surface of the support plate is fixedly connected to a pressure-bearing protective shell, and the worm and the worm gear are rotatably arranged in the pressure-bearing protective shell; the outer wall of the worm gear on the side away from the base plate is fixedly connected to a screw rod 2, the foot pedal is threadedly connected to the surface of the screw rod 2, and the foot pedal is slidably arranged in a movable groove, the inner wall of the bottom surface of the foot pedal is fixedly connected to a protection pad 2, the side inner wall of the foot pedal is fixedly connected to a protection pad 3, both ends of the inner wall of the bottom surface of the foot pedal are fixedly connected to side limit frames, and the outer wall of the side limit frame is fixedly connected to a plurality of Velcro straps distributed in an array.

[0013] By providing a moving component, Velcro straps are used to limit the patient's feet, and the patient's feet are protected by protective pads two and three. When the hand crank is turned, the patient's feet move horizontally toward the thigh side, which assists in changing the bending angle between the patient's thigh and calf. After adjustment, the patient can be given a knee joint injection.

[0014] From the above, it can be seen that the patient positioning device for knee joint injection provided by the present invention has the feature of eliminating the need for medical staff to manually lift the patient's legs and keep the thigh and calf at a certain bending angle, thereby reducing the difficulty of operation and improving the injection efficiency of the knee joint. The patient's leg position can be limited, avoiding the patient's position change due to pain during injection, thereby ensuring the technical effect of knee joint injection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a patient positioning device for knee joint injection proposed by the present invention.

[0016] Figure 2 This is a side view of the overall structure of a patient positioning device for knee joint injection proposed by the present invention.

[0017] Figure 3 This is a side structural sectional view of a lifting component of a patient positioning device for knee joint injection proposed by the present invention.

[0018] Figure 4 A patient positioner for knee joint injection proposed by the present invention Figure 3 A magnified view of the structure in the middle.

[0019] Figure 5 This is a structural side view of the lifting component of a patient positioning device for knee joint injection proposed by the present invention.

[0020] Figure 6 Two side structural cross-sectional views of a synchronous belt of a patient positioning device for knee joint injection proposed by the present invention.

[0021] Figure 7 This is a side structural sectional view of the support platform protective shell of a patient positioning device for knee joint injection proposed by the present invention.

[0022] Figure 8 This is a side structural sectional view of a support plate of a patient positioning device for knee joint injection proposed by the present invention.

[0023] In the figure: 1. Support plate; 2. Lifting assembly; 201. Screw rod 1; 202. Moving seat; 203. Connecting rod; 204. Lower support plate; 205. Lower slide groove; 206. Lower slider; 207. Steering plate 1; 208. Steering plate 2; 209. Upper fixed rod; 210. Upper support plate; 211. Upper slide groove; 212. Upper slider; 213. Lower fixed rod; 214. Gear 1; 215. Synchronous belt 1; 216. Gear 2; 217. Axle seat bracket; 218. Hand crank; 3. Base plate; 4. Pressure relief pad ; 5. Leg support; 6. Protection pad one; 7. Fixed plate; 8. Elastic rod; 9. Movable rod; 10. Movable seat; 11. Moving assembly; 1101. Gear three; 1102. Synchronous belt two; 1103. Gear four; 1104. Connecting rod; 1105. Worm; 1106. Worm wheel; 1107. Screw two; 1108. Moving slot; 1109. Foot pedal; 1110. Protection pad two; 1111. Protection pad three; 1112. Side limit frame; 1113. Velcro strap; 12. Pressure protection shell. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] The patient positioner for knee joint injection disclosed in the present invention is mainly used in scenarios where medical staff need to control the patient's legs while performing the injection, which is difficult to operate and inefficient, and the patient will react to the pain and change his body position, thereby affecting the puncture effect.

[0026] Reference Figure 1-Figure 8 A patient positioner for knee joint injection comprises a support plate 1, a lifting assembly 2 is arranged on one side of the top surface of the support plate 1, the lifting assembly 2 comprises a screw rod 201, a lower support plate 204 and an upper support plate 210, the screw rod 201 is rotatably arranged above the support plate 1, two lower support plates 204 and two upper support plates 210 are arranged, the two lower support plates 204 are fixedly connected to the top surface of the support plate 1, the two upper support plates 210 are fixedly connected to the two ends of the bottom surface of the support plate 3, the lower support plate 204 and the upper support plate 210 are arranged correspondingly up and down, a support plate 3 is arranged above the screw rod 201, a leg bracket 5 is arranged on one side above the support plate 3, a moving assembly 11 is arranged on the support plate 1, the moving assembly 11 comprises a foot pedal 1109, and the foot pedal 1109 is slidably arranged on the surface of the support plate 1.

[0027] Specifically, when performing a knee joint injection, the patient lies flat on the bed, the device is placed under the patient's legs, the patient's thigh and calf joints are placed on the leg support 5, and the patient's feet are placed on the foot pedal 1109. The moving component 11 is used to limit the patient's feet, and then the medical staff adjusts the lifting component 2 to move the base plate 3 upward, the patient's thigh is lifted up and off the bed surface, and at the same time, the patient's feet move horizontally to the side of the thigh, so that the patient's thigh and calf are at a certain angle, and then the patient can be injected with a knee joint. The medical staff does not need to manually lift the patient's legs and keep the thigh and calf at a certain bending angle, which reduces the difficulty of operation and improves the injection efficiency of the knee joint. At the same time, the patient's leg position is limited to avoid the patient's position change due to pain during the injection, thereby ensuring the effect of the knee joint injection.

[0028] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, the bottom surface of the leg bracket 5 is fixedly connected with a pressure-absorbing pad 4, and the bottom surface of the pressure-absorbing pad 4 is fixedly connected to the top surface of the supporting plate 3. The leg bracket 5 is arranged in a concave structure, and the inner wall of the bottom surface of the leg bracket 5 is fixedly connected with a protective pad 6; the outer walls on both sides of the leg bracket 5 are fixedly connected with a fixing plate 7, and the outer end of the bottom surface of the fixing plate 7 is fixedly connected with a plurality of elastic rods 8 distributed in an array, and the bottom surface of the fixing plate 7 is fixedly connected with a movable rod 9, and the top surface of the supporting plate 3 is fixedly connected with a movable seat 10, and the movable rod 9 is slidably arranged inside the movable seat 10.

[0029] Specifically, the patient's thigh and calf joints are placed on the protection pad 6 to make the patient more comfortable. While being placed, the pressure-relieving pad 4 and the fixing plate 7 are subjected to pressure, and the pressure-relieving pad 4 forms a buffer. At the same time, the movable rod 9 is positioned and guided along the inside of the movable seat 10, and the fixing plate 7 exerts pressure on the elastic rod 8 to form a further buffer, thereby avoiding injuries to the patient's legs when placed, and improving safety.

[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7In a preferred embodiment, the surface of the screw rod 201 is threadedly connected to the movable seat 202, and the outer walls on both sides of the movable seat 202 are fixedly connected to the connecting rod 203, and the interior of the two lower support plates 204 is provided with a sliding groove 205, and the ends of the two connecting rods 203 away from each other are fixedly connected to the lower slider 206, and the lower slider 206 is slidably arranged in the interior of the sliding groove 205; the ends of the two connecting rods 203 away from each other are rotatably provided with a steering plate 207, and the steering plate 207 is A second steering plate 208 is arranged on the outer wall, and the steering plate 1 207 and the steering plate 208 are arranged in an X-shaped structure. The intersection of the steering plate 1 207 and the steering plate 208 is rotatably connected through a rotating shaft rod. The bottom surface of the support plate 3 is fixedly connected with an upper fixed rod 209, and the ends of the two steering plates 1 207 away from the connecting rod 203 are rotatably connected to the two ends of the circumferential surface of the upper fixed rod 209; the side wall of the end of the steering plate 208 close to the support plate 3 is fixedly connected with an upper slider 212, and the inner opening of the upper support plate 210 An upper slide groove 211 is provided, and an upper slider 212 is slidably arranged in the upper slide groove 211. The outer walls of the two lower support plates 204 on the side close to each other are fixedly connected with a lower fixed rod 213. The two steering plates 208 are rotatably arranged at the two ends of the circumferential surface of the lower fixed rod 213 at one end close to the support plate 1; the end of the screw rod 1 201 away from the lower fixed rod 213 is fixedly connected with a gear 1 214, and the surface of the gear 1 214 is meshed with a synchronous belt 1 215, and the inner wall of the synchronous belt 1 215 is meshed with a gear 2 216. Gear 1 214 and gear 2 216 are arranged at both ends of synchronous belt 1 215, and axle seat bracket 217 is sleeved on the surface of the upper support plate 210, and the axle seat bracket 217 is fixedly connected to the top surface of the support plate 1, and the outer wall of the gear 1 214 on the side away from the lower fixed rod 213 is fixedly connected to the axle seat, and the outer wall of the gear 2 216 on the side close to the axle seat bracket 217 is fixedly connected to the shaft rod, and the shaft rod is rotatably arranged in the axle seat, and the outer wall of the gear 2 216 on the side away from the axle seat bracket 217 is fixedly connected to the hand crank 218.

[0031] Specifically, after the patient's legs are placed, the medical staff turns the hand crank 218 to rotate the gear 216, and drives the gear 1 214 to rotate synchronously through the synchronous belt 1 215, and then rotates the screw 1 201, and the movable seat 202 slides along the surface of the screw 1 201, and the connecting rod 203 slides along the lower support plate 204 through the lower slider 206, so that the angle between the steering plate 1 207 and the support plate 1 gradually increases, and the top of the steering plate 1 207 rotates along the surface of the upper fixed rod 209, and the base plate 3 moves upward, so that the steering plate 208 slides along the upper support plate 210 through the upper slider 212, and at the same time, the bottom of the steering plate 208 rotates along the surface of the lower fixed rod 213, so that the height of the leg support 5 increases, driving the patient's thigh to move upward, and the angle between the calf and the support plate 1 gradually increases.

[0032] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In a preferred embodiment, the moving assembly 11 includes a gear three 1101, which is fixedly connected to the surface of the screw rod 1 201, and the gear three 1101 is arranged between the gear one 214 and the shaft seat bracket 217, the surface of the gear three 1101 is meshed with the synchronous belt 2 1102, the inner wall of the synchronous belt 2 1102 is meshed with the gear four 1103, and the gear three 1101 and the gear four 1103 are arranged at both ends of the synchronous belt 2 1102; the outer wall of the gear four 1103 on one side close to the support plate 1 is fixedly connected to a connecting rod 1104, and the end of the connecting rod 1104 away from the gear four 1103 is fixedly connected to a worm 1105, and a moving groove 1108 is provided on the top surface of the support plate 1, and a worm wheel 110 is provided inside the moving groove 1108 for rotation. 6. The worm 1105 is meshed with the worm wheel 1106, and the top surface of the support plate 1 is fixedly connected with a pressure-bearing protective shell 12, and the worm 1105 and the worm wheel 1106 are rotatably arranged in the pressure-bearing protective shell 12; the outer wall of the worm wheel 1106 away from the base plate 3 is fixedly connected with a screw rod 2 1107, and a foot pedal 1109 is threadedly connected to the surface of the screw rod 2 1107, and the foot pedal 1109 is slidably arranged in a movable groove 1108, and a protection pad 2 1110 is fixedly connected to the inner wall of the bottom surface of the foot pedal 1109, and a protection pad 3 1111 is fixedly connected to the inner wall of the side of the foot pedal 1109, and both ends of the inner wall of the bottom surface of the foot pedal 1109 are fixedly connected with side limit frames 1112, and the outer wall of the side limit frame 1112 is fixedly connected with a plurality of Velcro straps 1113 distributed in an array.

[0033] Specifically, the medical staff places the patient's foot on the second protection pad 1110, and then uses the Velcro strap 1113 to limit the patient's foot, and the patient's foot is protected by the second protection pad 1110 and the third protection pad 1111. When the medical staff rotates the hand crank 218, the gear three 1101 rotates accordingly, and the gear four 1103 drives the connecting rod 1104 to rotate through the synchronous belt 2 1102, and the worm 1105 rotates with the connecting rod 1104, and the worm 1105 is meshed with the worm wheel 1106, so that the worm wheel 110 6 drives the screw rod 1107 to rotate, and the foot pedal 1109 drives the patient's foot to move horizontally along the screw rod 1107 to the side of the thigh, thereby assisting in changing the bending angle between the patient's thigh and calf. After adjustment, the patient can be injected into the knee joint. The medical staff does not need to manually lift the patient's legs and keep the thigh and calf at a certain bending angle, which reduces the difficulty of operation and improves the injection efficiency of the knee joint. At the same time, the patient's leg position can be limited to avoid the patient's position change due to pain during injection, thereby ensuring the effect of knee joint injection.

[0034] Working principle: When performing knee joint injection, the patient lies flat on the bed, and the device is placed under the patient's legs. The patient's thigh and calf joints are placed on the protective pad 6 to make the patient more comfortable. While placing the device, the pressure-relieving pad 4 and the fixing plate 7 are subjected to pressure, and the pressure-relieving pad 4 forms a buffer. At the same time, the movable rod 9 is guided along the internal positioning of the movable seat 10, and the fixing plate 7 exerts pressure on the elastic rod 8 to form a further buffer to avoid injuries to the patient's legs when placing the device, thereby improving safety. At the same time, the patient's feet are placed on the foot pedal 1109, which is beneficial to The patient's foot is limited by Velcro strap 1113, and the medical staff rotates the hand crank 218 to rotate gear 216, and drives gear 1 214 to rotate synchronously through synchronous belt 1 215, thereby rotating screw 1 201, and moving seat 202 slides along the surface of screw 1 201, and connecting rod 203 slides along lower support plate 204 through lower slider 206, so that the angle between steering plate 1 207 and support plate 1 gradually increases, and the top of steering plate 1 207 rotates along the surface of upper fixed rod 209, and the bearing plate 3 moves upward, so that steering plate 201 rotates. The upper slider 212 slides along the upper support plate 210, and at the same time, the bottom of the second steering plate 208 rotates along the surface of the lower fixed rod 213, so that the height of the leg support 5 rises, driving the patient's thigh to move upward, and the angle between the calf and the support plate 1 gradually increases. The patient's thigh is lifted up and separated from the bed surface. When the hand crank 218 is turned, the gear three 1101 rotates accordingly, and the gear four 1103 drives the connecting rod 1104 to rotate through the synchronous belt two 1102, and the worm 1105 rotates with the connecting rod 1104, and the worm 1105 is meshed with the worm wheel 1106. , so that the worm gear 1106 drives the screw rod 1107 to rotate, and the foot pedal 1109 drives the patient's foot to move horizontally along the screw rod 1107 to the side of the thigh, thereby assisting in changing the bending angle between the patient's thigh and calf. After adjustment, the patient can be injected into the knee joint. Medical staff do not need to manually lift the patient's legs and maintain the thigh and calf at a certain bending angle, which reduces the difficulty of operation and improves the injection efficiency of the knee joint. At the same time, the patient's leg position can be limited to avoid the patient's position change due to pain during injection, thereby ensuring the effect of knee joint injection.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A patient positioning device for knee joint injection, comprising a support plate (1), characterized in that: A lifting assembly (2) is arranged on one side of the top surface of the support plate (1), and the lifting assembly (2) comprises a screw rod (201), a lower support plate (204) and an upper support plate (210). The screw rod (201) is rotatably arranged above the support plate (1), and two of the lower support plates (204) and the upper support plates (210) are arranged. The two lower support plates (204) are fixedly connected to the top surface of the support plate (1), and the two upper support plates (210) are fixedly connected to the two ends of the bottom surface of the support plate (3). The lower support plates (204) and the upper support plates (210) are arranged correspondingly up and down. A support plate (3) is arranged above the screw rod (201), and a leg bracket (5) is arranged on one side above the support plate (3). A moving assembly (11) is arranged on the support plate (1), and the moving assembly (11) comprises a foot pedal (1109). The foot pedal (1109) is slidably arranged on the surface of the support plate (1).

2. A patient positioning device for knee joint injection according to claim 1, characterized in that: The surface of the screw rod 1 (201) is threadedly connected to a movable seat (202), and the outer walls on both sides of the movable seat (202) are fixedly connected to connecting rods (203), and the insides of the two lower support plates (204) are provided with lower sliding grooves (205), and the ends of the two connecting rods (203) that are away from each other are fixedly connected to lower sliding blocks (206), and the lower sliding blocks (206) are slidably arranged inside the lower sliding grooves (205).

3. A patient positioning device for knee joint injection according to claim 2, characterized in that: A steering plate 1 (207) is rotatably provided at one end of the two connecting rods (203) away from each other, and a steering plate 2 (208) is provided on the outer wall of the steering plate 1 (207). The steering plate 1 (207) and the steering plate 2 (208) are arranged in an X-shaped structure. The intersection of the steering plate 1 (207) and the steering plate 2 (208) is rotatably connected via a rotating shaft rod. An upper fixed rod (209) is fixedly connected to the bottom surface of the support plate (3). One end of the two steering plates 1 (207) away from the connecting rod (203) is rotatably connected to the two ends of the circumferential surface of the upper fixed rod (209).

4. A patient positioning device for knee joint injection according to claim 3, characterized in that: An upper slider (212) is fixedly connected to the side wall of one end of the deflection plate 2 (208) close to the support plate (3); an upper slide groove (211) is provided inside the upper support plate (210); the upper slider (212) is slidably arranged in the upper slide groove (211); a lower fixed rod (213) is fixedly connected to the outer walls of one side of the two lower support plates (204) close to each other; and one end of the two deflection plates 2 (208) close to the support plate (1) is rotatably arranged at both ends of the circumferential surface of the lower fixed rod (213).

5. A patient positioning device for knee joint injection according to claim 4, characterized in that: The end of the screw rod 1 (201) away from the lower fixed rod (213) is fixedly connected to a gear 1 (214), the surface of the gear 1 (214) is meshed with a synchronous belt 1 (215), the inner wall of the synchronous belt 1 (215) is meshed with a gear 2 (216), the gear 1 (214) and the gear 2 (216) are arranged at the two ends of the synchronous belt 1 (215), the surface of the upper support plate (210) is sleeved with an axle seat bracket (217), the axle seat bracket (217) is fixedly connected to the top surface of the support plate (1), and the outer wall of the side of the gear 1 (214) away from the lower fixed rod (213) is fixedly connected to the axle seat, the outer wall of the side of the gear 2 (216) close to the axle seat bracket (217) is fixedly connected to the shaft rod, the shaft rod is rotatably arranged in the shaft seat, and the outer wall of the side of the gear 2 (216) away from the axle seat bracket (217) is fixedly connected to a hand crank (218).

6. A patient positioning device for knee joint injection according to claim 1, characterized in that: The bottom surface of the leg bracket (5) is fixedly connected to a pressure-absorbing pad (4), and the bottom surface of the pressure-absorbing pad (4) is fixedly connected to the top surface of the support plate (3). The leg bracket (5) is arranged in a concave structure, and the inner wall of the bottom surface of the leg bracket (5) is fixedly connected to a protective pad (6).

7. A patient positioning device for knee joint injection according to claim 1, characterized in that: The outer walls on both sides of the leg bracket (5) are fixedly connected to a fixed plate (7), the outer ends of the bottom surface of the fixed plate (7) are fixedly connected to a plurality of elastic rods (8) distributed in an array, and the bottom surface of the fixed plate (7) is fixedly connected to a movable rod (9), and the top surface of the support plate (3) is fixedly connected to a movable seat (10), and the movable rod (9) is slidably arranged inside the movable seat (10).

8. A patient positioning device for knee joint injection according to claim 5, characterized in that: The moving assembly (11) comprises a gear three (1101), the gear three (1101) being fixedly connected to the surface of the screw rod one (201), and the gear three (1101) being arranged between the gear one (214) and the shaft seat bracket (217), the surface of the gear three (1101) being meshed with a synchronous belt two (1102), the inner wall of the synchronous belt two (1102) being meshed with a gear four (1103), and the gear three (1101) and the gear four (1103) being arranged at both ends of the synchronous belt two (1102).

9. A patient positioning device for knee joint injection according to claim 8, characterized in that: A connecting rod (1104) is fixedly connected to the outer wall of one side of the gear four (1103) close to the support plate (1), and a worm (1105) is fixedly connected to the end of the connecting rod (1104) away from the gear four (1103). A movable groove (1108) is provided on the top surface of the support plate (1), and a worm wheel (1106) is rotatably arranged inside the movable groove (1108). The worm (1105) meshes with the worm wheel (1106). A pressure-bearing protective shell (12) is fixedly connected to the top surface of the support plate (1), and the worm (1105) and the worm wheel (1106) are rotatably arranged inside the pressure-bearing protective shell (12).

10. A patient positioning device for knee joint injection according to claim 9, characterized in that: The outer wall of the worm gear (1106) on one side away from the support plate (3) is fixedly connected to the second screw rod (1107), the foot pedal (1109) is threadedly connected to the surface of the second screw rod (1107), and the foot pedal (1109) is slidably arranged in the movable groove (1108), the inner wall of the bottom surface of the foot pedal (1109) is fixedly connected to the second protection pad (1110), the inner wall of the side of the foot pedal (1109) is fixedly connected to the third protection pad (1111), both ends of the inner wall of the bottom surface of the foot pedal (1109) are fixedly connected to the side limit frame (1112), and the outer wall of the side limit frame (1112) is fixedly connected to a plurality of Velcro straps (1113) distributed in an array.

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