Limb puncture limiting auxiliary device for cerebral angiography examination

Abstract

The utility model belongs to the technical field of medical instruments, particularly relates to an auxiliary puncture limb limiting device for cerebral angiography examination, and aims to solve the problems that an existing device cannot well achieve multi-point fixation of lifting or left-right swinging of a limb and causes stuffiness and discomfort to the limb of a patient in the fixing process. Comprising a limb placement assembly, a hydraulic driving assembly and a limb limiting assembly, limbs, needing to be punctured, of a patient are supported through the limb placement assembly, the limb limiting assembly is driven by the hydraulic driving assembly to move, and the limb placement assembly presses the limb parts, placed on the limb limiting assembly, of the patient downwards; it is ensured that the punctured limbs of the patient cannot shake; the limb placement assembly comprises a limb horizontal placement base and an elastic supporting net, the elastic supporting net is provided with multiple net holes, the lower portion of the elastic supporting net is in a hollow state through an inwards-concave hollow bending groove, and then ventilation is facilitated.

Description

Technical Field

[0001] The utility model relates to a position limiting auxiliary device, in particular to a position limiting auxiliary device for limb puncture in cerebral angiography examination, belonging to the technical field of medical equipment. Background Art

[0002] Cerebral angiography is a new X-ray examination technology that has been widely used in clinical practice since the 1990s. It first selects an access artery, generally the right femoral artery, and places an arterial sheath through the right femoral artery. Different catheters are selected through the arterial sheath. Under the guidance of the guidewire, the artery to be displayed is selected and an iodine-containing contrast agent is injected. The vascular trajectory passed by the contrast agent is continuously photographed, and the digital subtraction angiography of the cerebral blood vessels is performed through computer-assisted imaging. At present, when puncturing patients for cerebral angiography, the patient's limb on the surgical side needs to be fixed. The patient needs to stay in bed for 24 hours after the operation, and the limb on the surgical side is prohibited from flexing the hip for six hours to avoid the influence of factors such as premature activity and incorrect body position after the operation. Local bleeding and hematoma, arteriovenous fistula, pseudoaneurysm and other serious complications may occur during the puncture, which increases the patient's pain and the difficulty of treatment.

[0003] In the prior art, there is a device for fixing the puncture-side limb of a patient undergoing cerebral angiography, as disclosed in announcement number CN113349815A, which includes a bed body, a mounting cavity being provided in the bed body, two rectangular sliding holes being provided on the top inner wall of the mounting cavity, two upright posts being slidably installed in the mounting cavity, the top ends of the two upright posts respectively passing through the corresponding rectangular sliding holes, first electric push rods being fixedly installed on the inner walls on both sides of the mounting cavity, and the output shaft ends of the two first electric push rods being fixedly connected to one side of the corresponding upright posts respectively. The limbs of patients of different heights and different fat and thin body types can be pressed and fixed on the bed body, and the use effect is good. The limbs of patients are firmly fixed to prevent the movement of the limbs of patients, which is helpful for medical staff to treat patients. In addition, the skin surface of the limb pressing part can be blown to dissipate heat and cool down, so as to avoid sweating due to the heat not being dissipated for a long time at the contact part between the skin and the arc pressure plate, thereby improving the comfort of patients. However, in actual use, since the existing device can only fix the limbs of patients on the upper and lower sides, although it can ensure that the limbs of patients cannot move up and down, the limbs of patients will still have left and right swinging movements, so the device cannot achieve a good fixing effect. Secondly, although the existing device is provided with a base structure for fixing the head of the patient's limbs, it will make the limbs of the patient completely fit on the base, which will cause the patient to feel relatively stuffy and bring certain discomfort to the patient. Although the external blowing and heat dissipation measures can be used to assist the patient in cooling down, the fitting parts cannot be directly blown and cooled, that is, the effect of better cooling to improve the comfort cannot be achieved. Utility Model Content

[0004] The utility model provides a limb limiting auxiliary device for puncture of cerebral angiography examination to solve the problem that the existing device cannot well realize multi-point fixation of lifting or left and right swinging of limbs and causes stuffy discomfort to the patient's limbs during the fixation process.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a limb limiting auxiliary device for cerebral angiography examination and puncture, comprising a limb placement component, a hydraulic drive component and a limb limiting component, the limb placement component is fixedly placed on one side of an external cerebral angiography operating table, the limb limiting component is movably connected to the top of the limb placement component, the hydraulic drive component is connected to one side of the limb placement component, and the movable end of the hydraulic drive component is connected to the limb limiting component;

[0006] The limb placement component includes a limb flat base and an elastic support net, the upper end surface of the limb flat base is provided with an inwardly concave hollow bending groove, the elastic support net is arranged above the inwardly concave hollow bending groove, and the elastic support net is fixedly connected to the two sides of the inwardly concave hollow bending groove provided by the limb flat base, a plurality of elastic support rods are vertically connected in the inwardly concave hollow bending groove, and the upper ends of the elastic support rods are fixedly connected to the net body of the elastic support net;

[0007] The limb limiting assembly includes a limiting pressure plate, a lower pressure limiting pad and a side pressure limiting plate. The lower pressure limiting pad and the side pressure limiting plate are both connected to the lower plate surface of the limiting pressure plate, and the side pressure limiting plates are arranged on both sides of the lower pressure limiting pad in an inwardly inclined state. A limiting pad inner cavity is opened in the lower pressure limiting pad, a hydraulic telescopic rod is connected to the dorsal side of the side pressure limiting plate, a guide pipe is connected to the upper plate surface of the limiting pressure plate, the limiting pad inner cavity and the hydraulic telescopic rod are connected through the guide pipe, and the limiting pad inner cavity, the hydraulic telescopic rod and the guide pipe are filled with hydraulic oil.

[0008] As a further solution of the utility model: a long hollow bending groove is provided on the rod body of the elastic support rod, and bending grooves are symmetrically provided on both sides of the rod body of the elastic support rod, and the bending grooves are respectively located at the upper and lower ends of the hollow bending groove.

[0009] As a further solution of the utility model: the hydraulic drive assembly includes a hydraulic movable seat, a movable push rod, a hydraulic oil storage chamber and a hydraulic oil diversion chamber. The hydraulic movable seat is fixedly connected to one side of the limb flat base. The hydraulic oil storage chamber and the hydraulic oil diversion chamber are both opened inside the hydraulic movable seat. The hydraulic oil diversion chamber is arranged above the hydraulic oil storage chamber. The movable push rod is vertically movably inserted in the hydraulic movable seat. The movable upper end of the movable push rod is fixedly connected to one side of the limiting pressure plate. One end of the movable push rod located in the hydraulic oil diversion chamber is fixedly connected with a push plate. The plate body of the push plate is movably inserted in the hydraulic oil diversion chamber. The hydraulic oil storage chamber and the hydraulic oil diversion chamber are connected through a liquid push cavity.

[0010] As a further solution of the utility model: the liquid pushing cavity includes an inner pushing liquid cavity and an outer pushing liquid cavity, and the inner pushing liquid cavity and the outer pushing liquid cavity are respectively connected at two end positions of the hydraulic oil storage cavity and the hydraulic oil guide cavity.

[0011] As a further solution of the utility model: a liquid pushing threaded rotating rod is rotatably connected in the hydraulic oil storage chamber, a liquid pushing piston is threadedly engaged on the rod body of the liquid pushing threaded rotating rod, the liquid pushing piston is movably inserted in the hydraulic oil storage chamber, and a rotating handle is coaxially fixedly connected to one end of the liquid pushing threaded rotating rod located on the outer side of the hydraulic movable seat.

[0012] As a further solution of the utility model: two movable push rods are movably inserted in the hydraulic oil diversion cavity and are arranged in parallel, and the rod bodies of the two movable push rods movably penetrate the upper end side wall of the hydraulic oil diversion cavity respectively.

[0013] As a further solution of the utility model: an L-shaped fixing clamp is arranged at the bottom of the hydraulic movable seat, the vertical end of the L-shaped fixing clamp is fixedly connected to one side of the hydraulic movable seat, and a clamping threaded rotating rod is threadedly rotatably connected at the center of the horizontal end of the L-shaped fixing clamp.

[0014] As a further solution of the utility model: a plurality of liquid conducting holes are opened on the plate body of the limit pressure plate, the liquid conducting holes located in the middle position are connected between the guide tube and the inner cavity of the limit pad, and the liquid conducting holes located at both ends are connected between the guide tube and the hydraulic telescopic rod.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model is provided with a limb placement component, a hydraulic drive component and a limb limiting component. The limb placement component can be used to support the limb of the patient to be punctured, and the limb limiting component can be driven to move by the hydraulic drive component, so that the limb placement component presses down the limb of the patient placed on the limb limiting component, ensuring that the limb of the patient to be punctured cannot shake, so as to facilitate the smooth progress of the cerebral angiography operation;

[0017] 2. The limb placement component provided by the utility model comprises a limb flat-laying base and an elastic support net, the upper end surface of the limb flat-laying base is provided with an inwardly concave hollow bending groove, and a plurality of elastic support rods are vertically connected in the inwardly concave hollow bending groove, so that when the patient's limb is placed on the limb placement component, the limb is directly in contact with the elastic support net, and the weight of the limb will cause the elastic support net to be pressed down and deformed, and then the elastic support rods will produce corresponding deformation to support the elastic support net, so that the patient's limb can be supported by the elastic support net in a fully fitting lifting manner, thereby improving the patient's comfort, and the elastic support net provided has a large number of meshes, and the inwardly concave hollow bending grooves provided make the bottom of the elastic support net in a hollow state, thereby facilitating ventilation, and also further improving the patient's comfort;

[0018] 3. The limb limiting assembly provided by the utility model comprises a limiting pressure plate, a lower limiting pad and a side limiting plate, wherein a limiting pad inner cavity is provided in the lower limiting pad, a hydraulic telescopic rod is connected to the back side of the side limiting plate, a guide tube is connected to the upper plate surface of the limiting pressure plate, the limiting pad inner cavity and the hydraulic telescopic rod are connected through the guide tube, and the limiting pad inner cavity, the hydraulic telescopic rod and the guide tube are filled with hydraulic oil, so that when the lower limiting pad is clamped just above the patient's limb and the side limiting plate is inclined and pressed downward against both sides of the patient's limb, if the patient's limb When it is lifted upward, the hydraulic oil in the inner cavity of the limit pad will flow into the hydraulic telescopic rod through the guide pipe, and then the side pressure limit plate will increase the downward pressure on both sides of the patient's limbs to maintain the fixation of the patient's limbs. If the patient's limbs swing left and right, the hydraulic oil in the hydraulic telescopic rod will flow into the inner cavity of the limit pad through the guide pipe, and then the downward pressure limit pad will increase the clamping force on the patient's limbs, which can also maintain the fixation of the patient's limbs. That is, the linkage between the downward pressure limit pad and the side pressure limit plate can achieve a better fixation effect on the patient's limbs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the connection structure of the hydraulic drive component and the limb limit component of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the limb placement assembly of the utility model;

[0022] Figure 4 This is a schematic diagram of the elastic support rod structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the hydraulic movable seat of the utility model;

[0024] Figure 6This is a schematic diagram of the internal hydraulic drive structure of the hydraulic movable seat of the utility model;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the limit pressure plate of the utility model.

[0026] In the figure: 1. limb flat base, 11. concave hollow bending groove, 2. elastic support rod, 21. hollow bending groove, 22. bending groove position, 3. elastic support net, 4. hydraulic movable seat, 41. movable push rod, 42. L-shaped fixed splint, 43. clamping threaded rotating rod, 44. hydraulic oil storage chamber, 45. hydraulic oil diversion chamber, 46. external propulsion liquid chamber, 47. internal propulsion liquid chamber, 48. push liquid threaded rotating rod, 49. push liquid piston, 410. rotating handle, 411. push plate, 5. limit pressure plate, 51. downward pressure limit pad, 52. side pressure limit plate, 53. hydraulic telescopic rod, 54. diversion tube, 55. limit pad inner cavity, 56. liquid diversion through hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, a limb limiting auxiliary device for puncture of cerebral angiography examination comprises a limb placement component, a hydraulic drive component and a limb limiting component. The limb placement component is fixedly placed on one side of an external cerebral angiography operating table, the limb limiting component is movably connected to the top of the limb placement component, the hydraulic drive component is connected to one side of the limb placement component, and the movable end of the hydraulic drive component is connected to the limb limiting component. The limb placement component can be used to support the limb of the patient to be punctured, and the limb limiting component can be driven to move by the hydraulic drive component, so that the limb placement component presses down the limb part of the patient placed on the limb limiting component, ensuring that the limb of the patient to be punctured cannot shake, so as to facilitate the smooth progress of the cerebral angiography operation;

[0030] The limb placement component includes a limb flat base 1 and an elastic support net 3. The upper end surface of the limb flat base 1 is provided with an inwardly concave hollow bending groove 11. The elastic support net 3 is arranged above the inwardly concave hollow bending groove 11, and the elastic support net 3 is fixedly connected to the two sides of the inwardly concave hollow bending groove 11 provided on the limb flat base 1. A plurality of elastic support rods 2 are vertically connected in the inwardly concave hollow bending groove 11. The upper ends of the elastic support rods 2 are fixedly connected to the net body of the elastic support net 3. When the patient's limb is placed on the limb placement component, The limbs are in direct contact with the elastic support net 3, and the weight of the limbs will cause the elastic support net 3 to be pressed down and deformed, and then the elastic support rod 2 will produce corresponding deformation to support the elastic support net 3, so that the patient's limbs can be supported by the elastic support net 3 in a completely fitting manner, thereby improving the patient's comfort. In addition, the elastic support net 3 is provided with a large number of meshes, and the inwardly concave hollow bending groove 11 makes the bottom of the elastic support net 3 in a hollow state, thereby facilitating ventilation, which can also further improve the patient's comfort.

[0031] The limb limiting assembly includes a limiting pressure plate 5, a lower limiting pad 51 and a side limiting plate 52. The lower limiting pad 51 and the side limiting plate 52 are both connected to the lower plate surface of the limiting pressure plate 5, and the side limiting plates 52 are arranged on both sides of the lower limiting pad 51 in an inwardly inclined shape. A limiting pad inner cavity 55 is provided in the lower limiting pad 51, and a hydraulic telescopic rod 53 is connected to the back side of the side limiting plate 52. A guide tube 54 is connected to the upper plate surface of the limiting pressure plate 5. The limiting pad inner cavity 55 and the hydraulic telescopic rod 53 are connected through the guide tube 54, and the limiting pad inner cavity 55, the hydraulic telescopic rod 53 and the guide tube 54 are filled with hydraulic oil, so that the lower limiting pad 51 can be clamped just above the patient's limb to When the side pressure limit plate 52 is inclined and pressed downwardly against both sides of the patient's limbs, if the patient's limbs are lifted upward, the hydraulic oil in the inner cavity 55 of the limit pad will flow into the hydraulic telescopic rod 53 through the guide tube 54, and then the side pressure limit plate 52 will increase the downward pressure on both sides of the patient's limbs to maintain the fixation of the patient's limbs. If the patient's limbs swing left and right, the hydraulic oil in the hydraulic telescopic rod 53 will flow into the inner cavity 55 of the limit pad through the guide tube 54, and then the downward pressure limit pad 51 will increase the clamping force on the patient's limbs, which can also maintain the fixation of the patient's limbs. That is, the linkage between the downward pressure limit pad 51 and the side pressure limit plate 52 can achieve a better fixation effect on the patient's limbs.

[0032] Embodiment 2

[0033] Improvements based on Example 1:

[0034] like Figure 2 , Figure 3 and Figure 4As shown, a long hollow bending groove 21 is provided on the rod body of the elastic support rod 2, and bending grooves 22 are symmetrically provided on both sides of the rod body of the elastic support rod 2, and the opening positions of the bending grooves 22 are respectively located at the upper and lower ends of the hollow bending groove 21, so that when the elastic support rod 2 is compressed and deformed, the rod bodies on both sides of the elastic support rod 2 where the hollow bending groove 21 is provided can be bent outwards in cooperation with the bending grooves 22, that is, the length of the rod body of the elastic support rod 2 can be adjusted, and the elastic support rod 2 can return to its original state when the pressure is removed, so as to change the length of the rod body accordingly according to the different sizes of the patient's limbs, so that the elastic support net 3 can fully fit and support the patient's limbs.

[0035] like Figures 1 to 6 As shown, the hydraulic drive assembly includes a hydraulic movable seat 4, a movable push rod 41, a hydraulic oil storage chamber 44 and a hydraulic oil diversion chamber 45. The hydraulic movable seat 4 is fixedly connected to one side of the limb flat base 1. The hydraulic oil storage chamber 44 and the hydraulic oil diversion chamber 45 are both opened inside the hydraulic movable seat 4. The hydraulic oil diversion chamber 45 is arranged above the hydraulic oil storage chamber 44. The movable push rod 41 is vertically movably inserted in the hydraulic movable seat 4. The movable upper end of the movable push rod 41 is fixedly connected to one side of the limit pressure plate 5. One end of the movable push rod 41 located in the hydraulic oil diversion chamber 45 is fixed. A push plate 411 is fixedly connected, and the body of the push plate 411 is movably inserted in the hydraulic oil guide chamber 45. The hydraulic oil storage chamber 44 and the hydraulic oil guide chamber 45 are connected through a liquid pushing cavity. The hydraulic oil in the hydraulic oil storage chamber 44 and the hydraulic oil guide chamber 45 can be conducted and flowed through the liquid pushing cavity, thereby driving the push plate 411 to move up and down in the hydraulic oil guide chamber 45, that is, it can drive the movable push rod 41 to move in the hydraulic oil guide chamber 45, and realize driving the limit pressure plate 5 to move up and down, that is, it can form a limit clamping fixation for the patient's limb part.

[0036] Furthermore, the pushing liquid cavity includes an inner pushing liquid cavity 47 and an outer pushing liquid cavity 46, and the inner pushing liquid cavity 47 and the outer pushing liquid cavity 46 are respectively connected at the two end positions of the hydraulic oil storage cavity 44 and the hydraulic oil guide cavity 45. When a part of the hydraulic oil in the hydraulic oil storage cavity 44 is transported to the hydraulic oil guide cavity 45 via the inner pushing liquid cavity 47, at the same time, an equal amount of hydraulic oil in the hydraulic oil guide cavity 45 will be transported to the hydraulic oil storage cavity 44 via the outer pushing liquid cavity 46. The hydraulic oil can also be transported in the reverse direction to control the flow of hydraulic oil on the upper and lower sides of the push plate 411.

[0037] Furthermore, a push-liquid threaded rotating rod 48 is rotatably connected in the hydraulic oil storage chamber 44, and a push-liquid piston 49 is threadedly engaged on the rod body of the push-liquid threaded rotating rod 48. The push-liquid piston 49 is movably inserted in the hydraulic oil storage chamber 44, and one end of the push-liquid threaded rotating rod 48 located outside the hydraulic movable seat 4 is coaxially fixedly connected to a rotating handle 410, which can be driven to rotate the push-liquid threaded rotating rod 48 by rotating the rotating handle 410, and then the push-liquid piston 49 can be driven to rotate in the hydraulic oil storage chamber according to the forward and reverse rotation of the push-liquid threaded rotating rod 48. 44 can realize directional adjustable movement, which is convenient for controlling the up and down movement adjustment of the limit pressure plate 5, and because the push piston 49 realizes movement based on the rotating thread engagement force, if an upward or downward force is applied to the movable push rod 41 from the outside, it will only drive the hydraulic oil to apply a vertical thrust to the push piston 49, and cannot push the push piston 49 to move. Therefore, it can be ensured that after the limit pressure plate 5 moves into place, it will not cause position deviation due to external force, that is, ensure the firmness of the clamping of the patient's limbs.

[0038] Furthermore, two movable push rods 41 are movably inserted in the hydraulic oil guide cavity 45 and are arranged in parallel, and the rod bodies of the two movable push rods 41 respectively penetrate the upper end side walls of the hydraulic oil guide cavity 45 to ensure that the limit pressure plate 5 can only move in the vertical direction above the limb flat base 1.

[0039] Furthermore, an L-shaped fixing splint 42 is provided at the bottom of the hydraulic movable seat 4, and the vertical end of the L-shaped fixing splint 42 is fixedly connected to one side of the hydraulic movable seat 4, and a clamping threaded rotating rod 43 is threadedly connected to the center of the horizontal end of the L-shaped fixing splint 42, so that the L-shaped fixing splint 42 can cooperate with the hydraulic movable seat 4 to form a clamping groove, thereby facilitating the clamping of the limiting auxiliary device on one side of the cerebral angiography operating bed, and the top of the clamping threaded rotating rod 43 can be turned to support the cerebral angiography operating bed, thereby ensuring that the limiting auxiliary device can be firmly connected to the operating bed combination, thereby facilitating its use in cerebral angiography surgery.

[0040] like Figure 1 and Figure 7 As shown, a plurality of liquid conducting holes 56 are provided on the plate body of the limit pressure plate 5. The liquid conducting holes 56 located in the middle portion are connected between the flow guide tube 54 and the inner cavity 55 of the limit pad, and the liquid conducting holes 56 located at both ends are connected between the flow guide tube 54 and the hydraulic telescopic rod 53, so that the hydraulic oil in the hydraulic telescopic rod 53 and the inner cavity 55 of the limit pad can flow in the flow guide tube 54 through the liquid conducting holes 56.

[0041] Working principle: when the patient's limbs are placed on the limb placement component, the limbs are in direct contact with the elastic support net 3, and the weight of the limbs will cause the elastic support net 3 to be pressed down and deformed, and then the elastic support rod 2 will produce corresponding deformation to support the elastic support net 3, so that the patient's limbs can be supported by the elastic support net 3 in a completely fitting manner, thereby improving the patient's comfort. The handle 410 is rotated to drive the push-liquid threaded rotating rod 48 to rotate, and then the push-liquid piston 49 can be driven to move in the hydraulic oil storage chamber 44 according to the rotation of the push-liquid threaded rotating rod 48, so as to control the downward movement and adjustment of the limit pressure plate 5, thereby forming a limit clamping and fixation of the patient's limb parts, and the limit pad 51 is clamped on the patient's body. When the lateral pressure limiting plate 52 is inclined and pressed downwardly on both sides of the patient's limbs, if the patient's limbs are lifted upward, the hydraulic oil in the limiting pad inner cavity 55 will flow into the hydraulic telescopic rod 53 through the guide tube 54, and then the lateral pressure limiting plate 52 will increase the downward pressure on both sides of the patient's limbs to maintain the fixation of the patient's limbs. If the patient's limbs swing left and right, the hydraulic oil in the hydraulic telescopic rod 53 will flow into the limiting pad inner cavity 55 through the guide tube 54, and then the downward pressure limiting pad 51 will increase the clamping force on the patient's limbs, which can also maintain the fixation of the patient's limbs. That is, the linkage effect of the downward pressure limiting pad 51 and the lateral pressure limiting plate 52 can achieve a better fixation effect on the patient's limbs.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A limb limiting auxiliary device for puncture of cerebral angiography examination, comprising a limb placement component, a hydraulic drive component and a limb limiting component, characterized in that: The limb placement component is fixedly placed on one side of the external cerebral angiography operating table, the limb limiting component is movably connected just above the limb placement component, the hydraulic drive component is connected to one side of the limb placement component, and the movable end of the hydraulic drive component is connected to the limb limiting component; The limb placement assembly comprises a limb placement base (1) and an elastic support net (3); the upper end surface of the limb placement base (1) is provided with an inwardly concave hollow bending groove (11); the elastic support net (3) is arranged above the inwardly concave hollow bending groove (11); and the elastic support net (3) is fixedly connected to the two side edges of the inwardly concave hollow bending groove (11) provided on the limb placement base (1); a plurality of elastic support rods (2) are vertically connected in the inwardly concave hollow bending groove (11); and the upper ends of the elastic support rods (2) are fixedly connected to the net body of the elastic support net (3); The limb limiting assembly comprises a limiting pressure plate (5), a lower limiting pad (51) and a side limiting plate (52); the lower limiting pad (51) and the side limiting plate (52) are both connected to the lower plate surface of the limiting pressure plate (5); and the side limiting plates (52) are arranged in an inwardly inclined manner on both sides of the lower limiting pad (51); a limiting pad inner cavity (55) is provided in the lower limiting pad (51); a hydraulic telescopic rod (53) is connected to the back side of the side limiting plate (52); a guide tube (54) is connected to the upper plate surface of the limiting pressure plate (5); the limiting pad inner cavity (55) and the hydraulic telescopic rod (53) are connected via the guide tube (54); and the limiting pad inner cavity (55), the hydraulic telescopic rod (53) and the guide tube (54) are filled with hydraulic oil.

2. The limb limiting auxiliary device for puncture of cerebral angiography according to claim 1, characterized in that: The body of the elastic support rod (2) is provided with a long hollow bending groove (21), and bending grooves (22) are symmetrically provided on both sides of the body of the elastic support rod (2), and the opening positions of the bending grooves (22) are respectively located at the upper and lower ends of the hollow bending groove (21).

3. The limb limiting auxiliary device for cerebral angiography examination and puncture according to claim 1 is characterized in that: The hydraulic drive assembly comprises a hydraulic movable seat (4), a movable push rod (41), a hydraulic oil storage chamber (44) and a hydraulic oil diversion chamber (45); the hydraulic movable seat (4) is fixedly connected to one side of a limb-laying base (1); the hydraulic oil storage chamber (44) and the hydraulic oil diversion chamber (45) are both arranged inside the hydraulic movable seat (4); the hydraulic oil diversion chamber (45) is arranged above the hydraulic oil storage chamber (44); the movable push rod (41) is vertically and movably inserted in the hydraulic movable seat (4); the movable upper end of the movable push rod (41) is fixedly connected to one side of a limit pressure plate (5); one end of the movable push rod (41) located in the hydraulic oil diversion chamber (45) is fixedly connected to a push plate (411); the plate body of the push plate (411) is movably inserted in the hydraulic oil diversion chamber (45); the hydraulic oil storage chamber (44) and the hydraulic oil diversion chamber (45) are connected via a push liquid channel.

4. The limb limiting auxiliary device for cerebral angiography examination and puncture according to claim 3 is characterized in that: The liquid pushing channel comprises an inner pushing liquid chamber (47) and an outer pushing liquid chamber (46), and the inner pushing liquid chamber (47) and the outer pushing liquid chamber (46) are respectively connected at two end positions of the hydraulic oil storage chamber (44) and the hydraulic oil guide chamber (45).

5. The limb limiting auxiliary device for cerebral angiography examination and puncture according to claim 4 is characterized in that: A fluid pushing threaded rotating rod (48) is rotatably connected in the hydraulic oil storage chamber (44); a fluid pushing piston (49) is threadedly engaged on the rod body of the fluid pushing threaded rotating rod (48); the fluid pushing piston (49) is movably inserted in the hydraulic oil storage chamber (44); and a rotating handle (410) is coaxially fixedly connected to one end of the fluid pushing threaded rotating rod (48) located outside the hydraulic movable seat (4).

6. The limb limiting auxiliary device for puncture of cerebral angiography according to claim 5, characterized in that: Two movable push rods (41) movably inserted in the hydraulic oil guide cavity (45) are arranged in parallel, and the rod bodies of the two movable push rods (41) respectively movably penetrate the upper end side wall of the hydraulic oil guide cavity (45).

7. The limb limiting auxiliary device for cerebral angiography examination and puncture according to claim 6, characterized in that: An L-shaped fixing clamp (42) is provided at the bottom of the hydraulic movable seat (4), the vertical end of the L-shaped fixing clamp (42) is fixedly connected to one side of the hydraulic movable seat (4), and a clamping threaded rotating rod (43) is threadedly rotatably connected at the center of the horizontal end of the L-shaped fixing clamp (42).

8. The limb limiting auxiliary device for cerebral angiography examination and puncture according to claim 1, characterized in that: The limiting pressure plate (5) is provided with a plurality of liquid conducting through holes (56), wherein the liquid conducting through holes (56) located in the middle portion are connected between the flow conducting tube (54) and the inner cavity (55) of the limiting pad, and the liquid conducting through holes (56) located at both ends are connected between the flow conducting tube (54) and the hydraulic telescopic rod (53).

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