A fixator for preventing contrast medium extravasation

Abstract

The utility model discloses a prevent fixer of contrast medium exosmosis, include: fixed seat has two, the bottom of fixed seat is equipped with the sliding slot, and the top is equipped with the rotary groove, the rotary bearing is set up on the rotary groove through the rotary base, be equipped with two symmetrical setting fixed part on the rotary base, be equipped with the inflation sac body in the fixed part, the connection guide rail is slidably assembled with the sliding slot, the position between fixed seat is controlled to the rotary base through the rotary bearing autorotation makes the fixed part between constitute the flexible body fixed structure, and the flexible body fixed structure is used for fixing the position of limb and / or joint. The utility model discloses through the control of fixed seat, rotary base and connection guide rail makes the fixed part between realize to the elbow joint of puncture part vicinity or the activity part or limb fixed, effectively prevents the contrast medium exosmosis phenomenon caused by the user unconscious movement upper limb or elbow flexion.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a fixation device for preventing contrast agent extravasation. Background Technology

[0002] Contrast agent extravasation is a common complication in medical imaging examinations (such as CT, MRI, and angiography), referring to the leakage of contrast agent through the blood vessel wall into surrounding tissues. Current clinical applications for preventing contrast agent extravasation involve fixing the puncture site with rigid or semi-rigid stents to restrict limb movement and prevent needle displacement. For example, a combination of a plastic or metal splint and elastic bandage, placing the forearm on a plastic fixation plate (with a sponge pad) and securing it with an elastic bandage, can effectively prevent contrast agent extravasation. However, the elastic bandage reduces breathability. Furthermore, most patients unconsciously move their upper limbs or flex their elbows during examinations or scans, easily leading to contrast agent extravasation. Utility Model Content

[0003] The purpose of this invention is to provide a fixation device for preventing contrast agent extravasation, thereby solving one or more technical problems existing in the prior art, and at least providing a beneficial option or creating conditions.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: First, this utility model provides a fixation device for preventing contrast agent extravasation, comprising: The fixing base has two parts, and the bottom of the fixing base is provided with a sliding groove and the top is provided with a rotating groove; A rotating seat is mounted on the rotating groove via a rotating bearing. The rotating seat has two symmetrically arranged fixing parts, and an inflatable bladder is provided inside each fixing part. A connecting guide rail is slidably assembled with the slide groove. The connecting guide rail controls the position between the fixed seats and the rotating seat rotates by a rotary bearing so that the fixed parts form a flexible limb fixation structure. The flexible limb fixation structure is used to fix the position of the limb and / or joint. A pressure-reducing cushion is disposed on one side of two fixed parts facing each other. The pressure-reducing cushion has an outer elastic silicone layer and an inner memory foam layer. The memory foam layer is disposed on one side of the inflatable bladder so that the inflatable bladder pushes the pressure-reducing cushion from one fixed part to the other fixed part when it is inflated.

[0005] Compared to traditional methods, the fixed seat, rotating seat, and connecting guide rail provided by this utility model constitute a flexible limb fixation structure, which can fix movable parts or limbs such as the elbow joint near the puncture site, effectively preventing contrast agent extravasation caused by the user's unconscious movement of the upper limb or elbow flexion.

[0006] The fixing part of this utility model has an inflatable bladder and a decompression buffer pad. The inflation of the inflatable bladder causes the decompression buffer pad to move toward the puncture site or nearby limbs, applying pressure evenly and fixing the puncture site and nearby joints. It is equipped with an outer elastic silicone layer and an inner memory foam layer. The multi-layer buffer structure can effectively disperse the impact force during high-pressure injection and avoid hard compression of blood vessels.

[0007] In use, the distance between the two fixation seats is adjusted by connecting the guide rail, and the rotating seat is rotated freely to a suitable angle position for the limb or joint near the puncture site. The limb or joint near the puncture site extends between the adjusted fixation parts. The puncture site can be located between the two fixation seats or on one fixation seat and fixed by the fixation parts, as long as it does not affect the examination operation. The inflation of the air bladder of the fixation part pushes the decompression buffer pad from one fixation part to the other, thereby fixing the limb or joint near the puncture site and avoiding contrast agent extravasation caused by the patient's unconscious limb movement or elbow flexion during examination or scanning.

[0008] As an extension of the above solution, the pressure-reducing buffer pad is concave in the vertical direction, and in the two pressure-reducing buffer pads on the same fixed base, the distance between the two concave upper ends is smaller than the distance between the two concave lower ends.

[0009] In this extended design, the concave shape increases the contact area with the skin and reduces local pressure. At the same time, the upper end of the concave shape protrudes more than the lower end, adapting to different limb circumferences (such as the arm and the back of the hand).

[0010] As an extension of the above solution, the bottom of the fixed seat is provided with a first groove, and a first through hole is provided between the first groove and the slide groove. A second through hole is provided between the outer side of the fixed seat and the first groove. A first rod is provided in the first through hole for pressing the connecting guide rail. A second rod is provided in the second through hole for pushing the first rod. The second through hole is threadedly connected to the second rod. When the second rod is rotated under force, it pushes the first rod to press the connecting guide rail to lock the movement between the connecting guide rail and the slide groove.

[0011] In this extended design, the second rod enters the first groove from the outside of the fixed seat. The second rod is positioned from the outside of the fixed seat so that operating the second rod does not affect the rotating seat and the fixed part above the fixed seat, nor does it interfere with the limb or puncture site. The movement of the second rod transmits power to the first rod, which moves along the first through hole and presses against the connecting guide rail, thereby restricting the movement of the connecting guide rail in the groove and fixing the distance between the two fixed seats.

[0012] As an extension of the above solution, the second rod body is provided with a push block at the end of the first groove body, and the first rod body is provided with a wedge block at the end of the first groove body. The push block and the wedge block are connected by a beveled surface.

[0013] In this extended solution, the first rod is distributed on both sides of the second rod and the push block. By pushing the second rod, the push block further pushes the wedge block through the inclined surface, so that the first rods on both sides move in the first through hole and press against the connecting guide rail. The connecting guide rail on both sides is limited by the single rod operation of the first rod.

[0014] As an extension of the above solution, the second rod is rotatably connected to the push block, and the second through hole is threadedly connected to the second rod so that the second rod pushes the push block to move linearly when it rotates. The motion is transmitted to the first rod through the inclined surface cooperation of the push block and the wedge block so that the end of the first rod presses against the connecting guide rail.

[0015] In this extended scheme, the second rod is rotated, and the rotation is converted into linear motion in the second through hole by the thread, thereby pushing the push block, causing the wedge block with inclined surface to move, which is transmitted to the first rod. The first rod moves in the first through hole and presses against the connecting guide rail, thereby restricting the movement of the connecting guide rail in the slide groove and fixing the distance between the two fixed seats.

[0016] As an extension of the above solution, the first through hole is perpendicular to the slide groove, and the second through hole is parallel to the slide groove.

[0017] In this extended design, the first through hole and the second through hole are perpendicular to each other, that is, the first rod and the second rod are perpendicular. By rotating the second rod, the rotational motion is converted into linear motion in the axial direction of the second through hole using a thread, thereby pushing the push block. The push block is transmitted to the wedge block through an inclined plane. The inclined plane changes the transmission direction, and the wedge block pushes the first rod to move linearly in the axial direction of the first through hole, pressing against the connecting guide rail, thereby restricting the movement of the connecting guide rail in the slide groove and fixing the distance between the two fixed seats.

[0018] As an extension of the above solution, a third through hole is provided between the side of the fixed seat and the rotating seat, and a third rod is provided in the third through hole for pressing the rotating seat. The third through hole and the third rod are connected by threads.

[0019] In this extended solution, the rotating seat is mounted on the rotating groove via a rotating bearing, allowing it to rotate freely 360°, thereby providing a suitable fixing angle for the limb. Furthermore, the distance between the two fixing seats is adjustable, forming a flexible limb fixing structure. When adjusted to a suitable fixing angle and distance, the third rod is rotated to move within the third through hole, thereby pressing against the rotating seat and fixing it in place.

[0020] As an extension of the above solution, a second groove is provided on the side of the fixing part, and a push-pull plate is provided in the second groove. The side of the push-pull plate is provided with several U-shaped slots and Velcro.

[0021] In this extended solution, by pulling the push-pull plate out of the second groove, several U-shaped slots and Velcro on the side of the push-pull plate can be used to fix tools such as needles / sutures at the puncture site, improving the convenience of the inspection operation.

[0022] As an extension of the above solution, a stretching extension section is provided between the edge of the pressure-reducing buffer pad and the fixing part.

[0023] In this extended solution, the pressure-reducing cushion moves toward the center when the inflatable bladder expands and presses against it. At this time, the stretching extension between the pressure-reducing cushion and the fixed part can not affect the movement of the pressure-reducing cushion. The stretching extension can be made of materials such as elastic cloth, tape, or leather with reserved excess length.

[0024] As an extension of the above solution, an inflation nozzle is provided on the side of the fixing part, and the inflation nozzle is connected to the inflation bladder in the fixing part. The inflation bladders in the two fixing parts of the same fixing seat are connected by an air tube.

[0025] In this extended solution, the inflation nozzle is used to connect an external inflation device, which can be a manual air cylinder / ball or an electric air inflator. The air nozzle inflates the air bladder of the fixed part, and the air bladders in the two fixed parts of the same fixed base are connected by an air tube, which can ensure that the air bladders of the two fixed parts expand relatively consistently, so that the pressure relief buffer pad moves more synchronously when pushed by the expansion of the air bladder. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the fixture in the embodiment; Figure 2 This is a structural schematic diagram of another state of the fixation device in the embodiment; Figure 3 This is a schematic diagram of the back structure of the mounting base in an embodiment.

[0027] Attached Figure

[0028] 100: Fixed seat; 101: Slide groove; 102: Rotating groove; 103: First groove body; 104: First through hole; 105: Second through hole; 106: First rod body; 107: Second rod body; 108: Push block; 109: Wedge block; 110: Third through hole; 111: Third rod body; 200: Rotating seat; 210: Fixed part; 211: Third groove body; 212: Push-pull plate body; 213: U-shaped locking position; 214: Velcro; 215: Inflator; 220: Pressure relief buffer pad; 221: Concave upper end; 222: Concave lower end; 300: Connecting guide rail. Detailed Implementation

[0029] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] Reference Figures 1 to 3 The following are several embodiments of a fixation device for preventing contrast agent extravasation according to the present invention.

[0034] like Figure 1 and 2 As shown, in some embodiments, a fixation device for preventing contrast agent extravasation includes: The fixing base 100 has two parts, and the bottom of the fixing base 100 is provided with a sliding groove 101 and the top is provided with a rotating groove 102; The rotating seat 200 is mounted on the rotating groove 102 via a rotating bearing. The rotating seat 200 is provided with two symmetrically arranged fixing parts 210, and an inflatable bladder is provided inside the fixing part 210. The connecting guide rail 300 is slidably assembled with the slide groove 101. The connecting guide rail 300 controls the position between the fixed seats 100 and the rotating seat 200 rotates by the rotating bearing so that the fixed parts 210 form a flexible limb fixation structure. The flexible limb fixation structure is used to fix the position of the limb and / or joint. A pressure-reducing cushion 220 is disposed on one side of two fixed parts 210 facing each other. The pressure-reducing cushion 220 has an outer elastic silicone layer and an inner memory foam layer. The memory foam layer is disposed on one side of the inflatable bladder so that the inflatable bladder pushes the pressure-reducing cushion 220 from one fixed part to the other fixed part when it is inflated.

[0035] In this embodiment, the fixing seat 100, the rotating seat 200, and the connecting guide rail 300 constitute a flexible limb fixation structure, which can fix the active parts or limbs such as the elbow joint near the puncture site, effectively preventing contrast agent extravasation caused by the user's unconscious movement of the upper limb or elbow flexion.

[0036] Furthermore, the fixation part 210 has an inflatable bladder and a decompression buffer pad 220. The inflation of the inflatable bladder causes the decompression buffer pad 220 to move toward the puncture site or nearby limbs, applying pressure evenly to fix the puncture site and nearby joints. It is equipped with an outer elastic silicone layer and an inner memory foam layer. The multi-layer buffer structure can effectively disperse the impact force during high-pressure injection and avoid hard compression of blood vessels.

[0037] In use, the distance between the two fixing seats 100 is adjusted by connecting the guide rail 300, and the rotating seat 200 is rotated freely to a suitable angle position for the limb or joint near the puncture site. The limb or joint where the puncture site is located extends into the adjusted fixing part 210. The puncture site can be located between the two fixing seats 100, or it can be located on one fixing seat 100 and fixed by the fixing part 210, as long as it does not affect the examination operation. Figure 1 The positions of the fixation seats and fixation parts are such that the limbs on both sides of the joint are fixed through the fixation parts on the two fixation seats, or as... Figure 2 The position of the fixation seat and fixation part can fix the front and back limbs of the puncture site on the arm.

[0038] In some embodiments, a single fixation seat can be used independently to fix the puncture site or the limbs nearby, and the pressure-reducing buffer pad can be used to effectively disperse the impact force during high-pressure injection, avoiding hard compression of blood vessels. The specific settings can be set according to actual usage needs.

[0039] After adjusting the positions of the fixation base 100 and the fixation part 210, the puncture site is inserted accordingly. The inflation of the air bladder of the fixation part 210 pushes the decompression buffer pad 220 from one fixation part to the other, thereby fixing the limb or joint near the puncture site and avoiding contrast agent extravasation caused by the patient's unconscious limb movement or elbow flexion during examination or scanning.

[0040] like Figure 1 As shown, in an optional embodiment, the pressure-reducing cushion 220 is concave in the vertical direction. In the two pressure-reducing cushions 220 on the same mounting base 100, the distance between the two concave upper ends 221 is smaller than the distance between the two concave lower ends 222. The concavity increases the contact area with the skin, reducing local pressure. Simultaneously, because the distance between the two concave upper ends 221 is smaller than the distance between the two concave lower ends 222, the concave upper ends 221 protrude towards the limb than the lower ends 222, adapting to different limb circumferences (such as the arm or back of the hand).

[0041] In an optional embodiment, such as Figure 3 As shown, the bottom of the fixed base 100 is provided with a first groove 103, and a first through hole 104 is provided between the first groove 103 and the slide groove 101. A second through hole 105 is provided between the outer side of the fixed base 100 and the first groove 103. A first rod 106 for pressing the connecting guide rail 300 is provided in the first through hole 104. A second rod 107 for pushing the first rod 106 is provided in the second through hole 105. The second through hole 105 and the second rod 107 are threadedly connected. When the second rod 107 is rotated under force, it pushes the first rod 106 to press the connecting guide rail 300 to lock the movement between the connecting guide rail 300 and the slide groove 101.

[0042] In this embodiment, the second rod 107 passes through the first groove 103 from the outside of the fixed seat 100. The second rod 107 is positioned from the outside of the fixed seat 100 so that the operation of the second rod 107 does not affect the rotating seat and the fixed part above the fixed seat 100 and avoids interference with the limb or puncture site. The movement of the second rod 107 transmits to the first rod 106. The first rod 106 moves along the first through hole 104 and presses against the connecting guide rail 300, thereby restricting the movement of the connecting guide rail 300 in the slide groove 101 and fixing the distance between the two fixed seats 100.

[0043] Furthermore, the second rod 107 is provided with a push block 108 at the end of the first groove 103, and the first rod 106 is provided with a wedge block 109 at the end of the first groove 103. The push block 108 and the wedge block 109 are connected by a beveled engagement. The first rod 106 is distributed on both sides of the second rod 107 and the push block 108. By pushing the second rod 107, the push block 108 further pushes the wedge block 109 through the beveled engagement, causing the first rods 106 on both sides to move in the first through hole 104, pressing against the connecting guide rail 300. The single-rod operation of the first rod 106 achieves the limitation of the connecting guide rail 300 on both sides.

[0044] In an optional embodiment, such as Figure 3 As shown, the second rod 107 is rotatably connected to the push block 108, and the second through hole 105 is threadedly connected to the second rod 107 so that the second rod 107 pushes the push block 108 to move linearly when rotating. The motion is transmitted to the first rod 106 through the inclined surface cooperation of the push block 108 and the wedge block 109 so that the end of the first rod 106 presses against the connecting guide rail 300.

[0045] In this embodiment, rotating the second rod 107 converts the rotation into linear motion in the second through hole 105 using a thread, thereby pushing the push block 108, causing the wedge block 109 with the inclined surface to move, which is transmitted to the first rod 106. The first rod 106 moves in the first through hole 104 and presses against the connecting guide rail 300, thereby restricting the movement of the connecting guide rail 300 in the slide groove 101 and fixing the distance between the two fixed seats 100.

[0046] Furthermore, the first through hole 104 is perpendicular to the slide groove 101, and the second through hole 105 is parallel to the slide groove 101. The first through hole 104 and the second through hole 105 are perpendicular to each other, that is, the first rod 106 and the second rod 107 are perpendicular. By rotating the second rod 107, the rotational motion is converted into linear motion in the axial direction of the second through hole 105 using a thread, thereby pushing the push block 108. The push block 108 is transmitted to the wedge block 109 through the inclined plane. The inclined plane changes the transmission direction, and the wedge block 109 pushes the first rod 106 to move linearly in the axial direction of the first through hole 104, pressing against the connecting guide rail 300, thereby restricting the movement of the connecting guide rail 300 in the slide groove 101 and fixing the distance between the two fixed seats 100.

[0047] In an optional embodiment, such as Figure 3 As shown, a third through hole 110 extends through the side of the fixed seat 100 and the rotating seat 200. A third rod 111 for pressing against the rotating seat 200 is provided within the third through hole 110. The third through hole 110 and the third rod 111 are connected by threads. The rotating seat 200 is mounted on the rotating groove 102 via a rotary bearing, allowing it to rotate freely 360°, thus providing a suitable fixing angle for the limb. Furthermore, the distance between the two fixed seats 100 is adjustable, forming a flexible limb fixing structure. When adjusted to a suitable fixing angle and distance, rotating the third rod 111 causes it to move within the third through hole 110, thereby pressing against the rotating seat 200 and fixing it in place.

[0048] In an optional embodiment, such as Figure 1 As shown, the fixing part 210 has a second groove 211 on its side, and a push-pull plate 212 is provided in the second groove 211. The side of the push-pull plate 212 is provided with a plurality of U-shaped slots 213 and Velcro 214.

[0049] In this embodiment, by pulling the push-pull plate 212 out of the second groove 211, the needle / suture tube and other tools on the puncture site can be fixed by using a number of U-shaped slots 213 and Velcro 214 on the side of the push-pull plate 212, thereby improving the convenience of the inspection operation.

[0050] In an optional embodiment, a stretchable extension section is provided between the edge of the pressure-reducing cushion and the fixing part. When the inflatable bladder expands and presses against the cushion, the pressure-reducing cushion moves towards the center. At this time, the stretchable extension section between the pressure-reducing cushion and the fixing part can not affect the movement of the pressure-reducing cushion. The stretchable extension section can be made of materials such as elastic fabric, tape, or leather with a reserved excess length.

[0051] In an optional embodiment, such as Figure 1 and 2 As shown, an inflation nozzle 215 is provided on the side of the fixing part 210. The inflation nozzle 215 is connected to the inflation bladder in the fixing part 210. The inflation bladders in the two fixing parts 210 of the same fixing seat 100 are connected by an air tube.

[0052] The inflation nozzle is used to connect an external inflation device, which can be a manual air cylinder / ball or an electric air inflator. The air inflator is used to inflate the air bladder of the fixed part. The air bladders in the two fixed parts of the same fixed base are connected by an air tube, which can ensure that the air bladders of the two fixed parts expand relatively consistently, so that the pressure relief buffer pad moves more synchronously when pushed by the expansion of the air bladder.

[0053] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A fixation device for preventing contrast agent extravasation, characterized in that, include: The fixing base (100) has two parts, and the bottom of the fixing base (100) is provided with a sliding groove (101) and the top is provided with a rotating groove (102). A rotating seat (200) is mounted on the rotating groove (102) via a rotating bearing. The rotating seat (200) is provided with two symmetrically arranged fixing parts (210), and an inflatable bladder is provided inside the fixing part (210). The connecting guide rail (300) is slidably assembled with the slide groove (101). The connecting guide rail (300) controls the position between the fixed seats (100) and the rotating seat (200) rotates by a rotating bearing so that the fixed parts (210) form a flexible limb fixation structure. The flexible limb fixation structure is used to fix the position of the limb and / or joint. A pressure-reducing cushion (220) is disposed on one side of two fixed parts (210) facing each other. The pressure-reducing cushion (220) has an outer elastic silicone layer and an inner memory foam layer. The memory foam layer is disposed on one side of the inflatable bladder so that the inflatable bladder pushes the pressure-reducing cushion (220) from one fixed part toward the other fixed part when it is inflated.

2. The fixation device for preventing contrast agent extravasation according to claim 1, characterized in that: The pressure-reducing buffer pad (220) is concave in the vertical direction. Among the two pressure-reducing buffer pads (220) on the same fixed seat (100), the distance between the two concave upper ends (221) is less than the distance between the two concave lower ends (222).

3. The fixation device for preventing contrast agent extravasation according to claim 1, characterized in that: The bottom of the fixed base (100) is provided with a first groove (103), and a first through hole (104) is provided between the first groove (103) and the slide (101). A second through hole (105) is provided between the outer side of the fixed base (100) and the first groove (103). A first rod (106) for pressing the connecting guide rail (300) is provided in the first through hole (104), and a second rod (107) for pushing the first rod (106) is provided in the second through hole (105). When the second rod (107) is subjected to force, it pushes the first rod (106) to press the connecting guide rail (300) to lock the movement between the connecting guide rail (300) and the slide (101).

4. The fixation device for preventing contrast agent extravasation according to claim 3, characterized in that: The second rod (107) is provided with a push block (108) at the end of the first groove (103), and the first rod (106) is provided with a wedge block (109) at the end of the first groove (103). The push block (108) and the wedge block (109) are connected by a beveled joint.

5. The fixation device for preventing contrast agent extravasation according to claim 4, characterized in that: The second rod (107) is rotatably connected to the push block (108), and the second through hole (105) is threadedly connected to the second rod (107) so that the second rod (107) pushes the push block (108) to move linearly when rotating, and is transmitted to the first rod (106) through the inclined surface cooperation of the push block (108) and the wedge (109) so that the end of the first rod (106) presses against the connecting guide rail (300).

6. The fixation device for preventing contrast agent extravasation according to claim 3, characterized in that: The first through hole (104) is perpendicular to the slide groove (101), and the second through hole (105) is parallel to the slide groove (101).

7. The fixation device for preventing contrast agent extravasation according to claim 1, characterized in that: A third through hole (110) is provided between the side of the fixed seat (100) and the rotating seat (200). A third rod (111) for pressing the rotating seat (200) is provided in the third through hole (110). The third through hole (110) and the third rod (111) are connected by threads.

8. The fixation device for preventing contrast agent extravasation according to claim 1, characterized in that: The fixing part (210) has a second groove (211) on its side, and a push-pull plate (212) is provided in the second groove (211). The side of the push-pull plate (212) is provided with a number of U-shaped slots (213) and Velcro (214).

9. The fixation device for preventing contrast agent extravasation according to claim 1, characterized in that: A stretching extension section is provided between the edge of the pressure-reducing buffer pad (220) and the fixing part (210).

10. The fixation device for preventing contrast agent extravasation according to claim 1, characterized in that: An inflation nozzle (215) is provided on the side of the fixing part (210), and the inflation nozzle (215) is connected to the inflation bladder inside the fixing part (210).

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