CN218220219U - Knee bending fixing device for lower limb artery CT - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, and discloses a fixing device for bending knees of lower limb artery CT, which comprises connecting seats, wherein the connecting seats are symmetrically arranged, a first bearing part for placing thighs is arranged between the connecting seats, a second bearing part for placing shanks is arranged at the free end of the first bearing part, an included angle capable of bending knees is formed between the second bearing part and the first bearing part, a third bearing part for placing feet is arranged at the free end of the second bearing part, an included angle capable of stretching foot faces is formed between the third bearing part and the second bearing part, a clamping part for positioning legs is arranged on the first bearing part, and a pressing part for positioning feet is arranged on the third bearing part; this application reasonable in design, simple structure for the shank is bent the knee and is placed, makes the foot face of stretching tight place, and the supplementary tight location of clamp of cooperation, convenient operation, spacing effectual has guaranteed going on smoothly of testing process, improves low limbs CTA's image quality.

Description

Knee bending fixing device for lower limb artery CT

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a fixing device that bends knee of low limbs artery CT.

Background

The angiography is an interventional detection method, a developer is injected into a blood vessel, and because the developer is not penetrated by X-rays, the angiography utilizes the characteristic, and the angiopathy is diagnosed by the displayed image of the developer under the X-rays, so that the angiography has the characteristics of no wound and simple and convenient operation, and has important values for vascular variation, vascular diseases and displaying of the relationship between the pathological changes and the blood vessel.

China has more and more atherosclerosis old people and more patients who make lower limb CTA, when doing lower limb arterial CTA, the joints of the lower limbs need to be bent for examination, but some lower limbs of the patients can involuntary move and are hard to control, so that the examination fails, and an effective fixing device is needed to keep the lower limbs of the patients still so as to improve the image quality of the lower limb CTA.

Disclosure of Invention

An object of the utility model is to provide a low limbs artery CT's fixing device that bends knee, it is fixed to carry out the bending with the joint of low limbs, has avoided patient's low limbs to be unknown from the primary motion, guarantees going on smoothly of detection, the effectual problem of proposition of having solved among the above-mentioned background art.

The utility model adopts the technical scheme as follows: the utility model provides a fixing device that bends knee of low limbs artery CT, includes the connecting seat, its characterized in that the connecting seat symmetry sets up, be equipped with the first bearing part of placing the thigh between the connecting seat, the free end of first bearing part is equipped with the second bearing part of placing the shank, and form the contained angle that can bend the knee between second bearing part and the first bearing part, the free end that bears the weight of the portion at the second is equipped with the third bearing part of placing the foot, and the contained angle that can tighten the instep is formed between third bearing part and the second bearing part, be equipped with the clamping piece of shank location on first bearing part, be equipped with the piece that compresses tightly of foot location on the third bearing part.

The beneficial effect who adopts above-mentioned scheme is: through setting up first portion, the second portion, the third portion of bearing the weight of that bears, can bear patient's shank and bend the knee and place, can bear patient's foot and stretch out the instep and place, cooperation clamping piece with compress tightly the piece, the effectual motion that has restricted patient shank and foot has guaranteed going on smoothly of testing process, improves low limbs CTA's image quality.

Furthermore, consider the reliability of above-mentioned first bearing part and second bearing part structure, first bearing part includes a pair of straight-bar, and it has the arc pole to bond between the straight-bar of connecting seat one side, and the arc pole downwarping, has the down tube at the free end of straight-bar bonding, has the arc pole at the free end bonding of down tube, and straight-bar, down tube, arc pole three form confined frame construction, are equipped with the plastic slab of arc form on frame construction.

The beneficial effect of adopting the above further scheme is: through setting up straight-bar, down tube, arc pole, can strengthen the rigidity of structure, promote the bearing capacity.

Further, considering the comfort level of the patient during detection, the upper surface of the plastic plate is provided with a sponge layer.

The beneficial effect of adopting the further scheme is that: the use comfort level of the detection process is improved.

Further, the third bearing part is of a plate-like structure in view of its influence on the use of the patient.

The beneficial effect of adopting the further scheme is that: can be attached to the sole of the foot, and has good comfort.

Furthermore, consider the fixed of above-mentioned clamping piece structure to the shank, the lateral wall of straight-bar is equipped with the sliding sleeve, and sliding connection has the slide bar in the sliding sleeve, and the slip direction orientation of slide bar is perpendicular shank, is equipped with the handle at the outside end of slide bar, is equipped with splint at the medial extremity of slide bar, and splint are the arc, are equipped with the sponge strip on splint, are equipped with reset spring between splint and sliding sleeve.

The beneficial effect of adopting the further scheme is that: the handle is pulled outwards by hands, so that the aperture between the clamping plates can be enlarged, the legs of a patient can be conveniently put in the clamping plates, and the reset spring pushes the clamping plates to clamp the legs after the clamping plates are loosened.

Furthermore, considering the fixation of the pressing part structure to the foot, the pressing part comprises vertical bars fixed on the third bearing part, the vertical bars are arranged in two rows to limit the left and right movement of the foot, silica gel balls are arranged at the free ends of the vertical bars, and a narrow opening encircling the foot is formed between the adjacent silica gel balls.

The beneficial effect of adopting the further scheme is that: through setting up the silica gel ball, the patient foot struts the slot, and two rows of silica gel balls can carry on spacingly to the foot.

Further, consider that above-mentioned clamping piece need operate one by one when using and just can fix, complex operation, be equipped with the compression spring of matrix arrangement up on the plastic slab of first bearing part, be equipped with the clamp plate at compression spring's free end, be equipped with the cladding face of concavity at the top surface of clamp plate, be equipped with articulated seat at the minor face both ends of clamp plate, it is connected with the L template to rotate on articulated seat, and the vertical segment length of L template is greater than the horizontal segment length, be equipped with the leg clamping board at the vertical segment of L template, and the bore between the leg clamping board diminishes along with the clamp plate descends, be equipped with the bar-shaped cotton on the surface of leg clamping board.

The beneficial effect of adopting the further technical scheme is that: during initial state, because the vertical section length of L template is greater than the horizontal segment for the vertical section of L template leans out, horizontal segment and clamp plate bottom surface contact, and the leg clamping plate opens this moment, and then the patient places the shank when the cladding surface, because the factor of gravity, the clamp plate descends, promotes the L template rotation, and the bore between the leg clamping plate diminishes gradually, and is convenient to use, simple until cliping the shank.

Further, consider that the connected mode of above-mentioned connecting seat and first bearing part is fixed, in order to increase the angle variety of this application, the connecting seat passes through angle location spare with first bearing part and is connected, angle location spare is including fixing the column base on the connecting seat and fixing the sleeve on first bearing part, is equipped with first flank of tooth at telescopic medial surface, be equipped with the second flank of tooth with first flank of tooth meshing at the lateral surface of column base, be equipped with the screw rod that passes the sleeve hole at the center of column base, threaded connection has extrusion sleeve and column base meshed hand wheel on the screw rod, the same is equipped with angle location spare in the joint department of first bearing part and second bearing part, be equipped with angle location spare in the joint department of second bearing part and third bearing part.

The beneficial effect of adopting the above further scheme is: the first tooth surface and the second tooth surface are separated by rotating the hand wheel, the angle of each joint is adjusted, and after the adjustment is completed, the hand wheel is rotated to be screwed down, so that the application range is enlarged.

Furthermore, considering that the fixed positions of the legs and the feet are changed greatly, a bandage which is opened and closed at the middle part is arranged between the sleeves, and the connecting part of the bandage is positioned by a magic tape.

The beneficial effect of adopting the further scheme is that: can still carry out stable ligature location after shank foot angle changes, application scope is wide.

The beneficial effects of the utility model reside in that: this application reasonable in design, simple structure for the shank is bent the knee and is placed, makes the foot face of stretching tight place, and the supplementary tight location of clamp of cooperation, convenient operation, spacing effectual has guaranteed going on smoothly of testing process, improves low limbs CTA's image quality.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of a straight rod, an inclined rod and an arc rod.

Fig. 3 is a schematic side sectional view of the plastic board and the sponge layer.

Fig. 4 is a front sectional view of the clamping member.

Fig. 5 is a schematic three-dimensional structure diagram of the third bearing portion and the silica gel ball.

Fig. 6 is a front sectional view of the free-state leg-clamping plate.

Fig. 7 is a schematic sectional view of the clamping leg plate in a clamped state.

Fig. 8 is a schematic perspective view of an angle positioning element.

Fig. 9 is an exploded view of the angle positioning member.

Fig. 10 is a perspective view of the strap.

In the figure: 1. a connecting seat; 2. a first bearing part; 3. a second bearing part; 4. a third bearing part; 5. a clamping member; 6. a pressing member; 7. a straight rod; 8. an arcuate bar; 9. a diagonal bar; 10. a plastic panel; 11. a sponge layer; 12. a sliding sleeve; 13. a slide bar; 14. a handle; 15. a splint; 16. a sponge strip; 17. a return spring; 18. a vertical rod; 19. a silica gel ball; 20. a narrow opening; 21. a compression spring; 22. pressing a plate; 23. coating the surface; 24. a hinged seat; 25. an L-shaped plate; 26. a leg clamping plate; 27. rod-shaped cotton; 28. an angle positioning member; 29. a sleeve; 30. a column base; 31. a first tooth surface; 32. a second tooth surface; 33. a screw; 34. a hand wheel; 35. and (4) binding the bands.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations, and it is particularly noted that all the parts and technical feature materials used in the present application cannot be metals, and the replacement parts are not replaced by metal parts.

Example one

As shown in fig. 1, a lower limbs artery CT's fixing device that bends knee, including connecting seat 1, its characterized in that connecting seat 1 symmetry sets up, this connecting seat 1 is the L type seat of taking the bolt hole, can fix on CTA through the bolt, it has the first supporting part 2 of placing the thigh to bond between connecting seat 1, it has the second supporting part 3 of placing the shank to bond at the free end of first supporting part 2, and form the contained angle that can bend the knee between second supporting part 3 and the first supporting part 2, the number of degrees of this contained angle is greater than 90, it has the third supporting part 4 of placing the foot to bond at the free end of second supporting part 3, and form the contained angle that can stretch the instep between third supporting part 4 and the second supporting part 3, this contained angle is greater than 90, install clamping piece 5 on first supporting part 2, this clamping piece 5 is used for the location of shank, install on third supporting part 4 and compress tightly piece 6, this compresses tightly the location that 6 is used for the foot, use: the patient puts the shank on first supporting part 2, second supporting part 3, third supporting part 4, wherein first supporting part 2 makes the shank of patient bend the knee with second supporting part 3 and places, and wherein second supporting part 3 makes the foot of patient stretch the instep with third supporting part 4 and place, cooperates clamping piece 5 and compresses tightly the assistance-localization real-time of piece 6 and acts on, the effectual motion of restricting patient's shank and foot.

As shown in fig. 2-3, as an optimization of the embodiment, in consideration of the reliability of the structures of the first bearing part 2 and the second bearing part 3, the service life of the detection device is ensured, the first bearing part 2 includes a pair of straight bars 7, the straight bars 7 are parallel to the thigh placement direction, the arc-shaped bars 8 are bonded between the straight bars 7 on one side of the connecting seat 1, the arc-shaped bars 8 are bent downward to form U-shaped grooves for facilitating leg placement, the diagonal bars 9 are bonded at the free ends of the straight bars 7, the diagonal bars 9 are parallel to the shank placement direction, the arc-shaped bars 8 are bonded at the free ends of the diagonal bars 9, the straight bars 7, the diagonal bars 9 and the arc-shaped bars 8 form a closed frame structure, the material is a stainless steel pipe, the arc-shaped plastic plate 10 is fixed on the frame structure through bolts, the plastic plate 10 is a hard plastic plate, the sponge layer 11 is bonded on the upper surface of the plastic plate 10, the hard plastic plate 11 can prevent the legs from position change in the detection process, the straight bars 7, the diagonal bars 9 and the arc-shaped plastic plate 8 are arranged to strengthen the rigidity and the strength of the frame structure, thereby improving the bearing capacity of the detection device, and ensuring the service life of the detection device.

As shown in fig. 5, as the optimization of the embodiment, considering the influence of the structure of the third bearing part 4 on the use of the patient, the third bearing part 4 is of a flat plate structure, can be attached to the sole of the foot, has good comfort, and can tighten the surface of the foot.

As shown in fig. 4, as an optimization of the embodiment, in consideration of the fixation of the structure of the clamping member 5 to the leg, a sliding sleeve 12 is bonded to the side wall of the straight rod 7, the sliding sleeve 12 is a tubular structure, a sliding rod 13 is slidably connected in the sliding sleeve 12, the sliding sleeve 12 and the sliding rod 13 are in clearance fit, the sliding direction of the sliding rod 13 is perpendicular to the leg, a handle 14 is bonded to the outer end of the sliding rod 13, the sliding rod 13 can be limited by the handle 14 to be detached from the sliding sleeve 12, a clamping plate 15 is bonded to the inner end of the sliding rod 13, the clamping plate 15 is an arc shape, the clamping plates 15 on both sides can form a ring shape, a sponge strip 16 is bonded to the clamping plate 15, the sponge strip 16 is hard, so as to avoid the position change of the leg in the detection process, a return spring 17 is sleeved between the clamping plate 15 and the sliding sleeve 12, and the clamping process: through the outside pulling of handheld handle 14, can make the aperture grow between the splint 15, make things convenient for the patient to put into the shank, loosen back reset spring 17 and promote splint 15 and press from both sides tight shank.

As shown in fig. 5, as an optimization of the embodiment, in consideration of the fixation of the structure of the pressing member 6 to the foot, the pressing member 6 includes a vertical rod 18 fixed on the third bearing portion 4, and the vertical rod 18 is divided into two rows to limit the side-to-side movement of the foot, the number of the vertical rods 18 is at least 4, the vertical rods 18 are parallel to the orientation of the foot, a silicone ball 19 is fixed at a free end of the vertical rod 18, the diameter of the silicone ball 19 is much larger than that of the vertical rod 18, a narrow opening 20 surrounding the foot is formed between adjacent silicone balls 19, by providing the silicone ball 19, the foot of the patient struts the narrow opening 20, the two rows of silicone balls 19 can limit the foot, and specifically, the positioning can be performed at 6 degrees of freedom.

Example two

As shown in fig. 6-7, considering that the clamping members 5 need to be fixed one by one when in use, the operation is cumbersome, the compression springs 21 arranged in an upward matrix are fixed on the plastic plate 10 of the first bearing portion 2, the number of the compression springs 21 is at least 6, the pressing plate 22 is fixed at the free end of the compression spring 21, the pressing plate 22 is made of rigid plastic, the concave cladding surface 23 is bonded on the top surface of the pressing plate 22, the hinge bases 24 are fixed at both ends of the short side of the pressing plate 22, the L-shaped plate 25 is rotatably connected on the hinge bases 24, the material is made of rigid plastic, the vertical section length of the L-shaped plate 25 is greater than the horizontal section length, the leg clamping plates 26 are bonded on the vertical section of the L-shaped plate 25, the material is made of rigid plastic, the caliber between the leg clamping plates 26 decreases with the descending of the pressing plate 22, the rod-shaped cotton 27 is bonded on the surface of the leg clamping plates 26, and the rod-shaped cotton 27 is rigid to avoid the leg position change in the detection process: in the initial state, the vertical section of the L-shaped plate 25 is larger than the horizontal section, so that the vertical section of the L-shaped plate 25 inclines outwards, the horizontal section is in contact with the bottom surface of the pressing plate 22, the leg clamping plate 26 is opened at the moment, then when a patient places legs on the covering surface 23, the pressing plate 22 descends due to the gravity, the L-shaped plate 25 is pushed to rotate, the caliber between the leg clamping plates 26 gradually decreases until the legs are clamped, and the use is convenient and simple.

EXAMPLE III

As shown in fig. 8-9, considering that the connection mode of the connection seat 1 and the first bearing portion 2 is fixed, in order to increase the angle diversity of the present application, the connection seat 1 and the first bearing portion 2 are connected through the angle positioning element 28, so that the angle between the connection seat 1 and the first bearing portion 2 is adjustable, the angle positioning element 28 includes a column seat 30 fixed on the connection seat 1 and a sleeve 29 fixed on the first bearing portion 2, the sleeve 29 is a tubular structure, the column seat 30 is a cylindrical structure, a first tooth surface 31 is processed on the inner side surface of the sleeve 29 at an equal angle, a second tooth surface 32 meshed with the first tooth surface 31 is processed on the outer side surface of the column seat 30 at an equal angle, a screw 33 passing through the inner hole of the sleeve 29 is bonded at the center of the column seat 30, the free end of the screw 33 exceeds the sleeve 29, a hand wheel 34 meshed with the column seat 30 is connected to the screw 33 through a threaded connection of the extrusion sleeve 29, the angle positioning element 28 is similarly installed at the joint of the first bearing portion 2 and the second bearing portion 3, and the joint of the third bearing portion 4, and the angle adjustment process: the first tooth surface 31 is separated from the second tooth surface 32 by rotating the hand wheel 34, the angle of each connecting part is adjusted, and after the adjustment is completed, the hand wheel 34 is rotated to be screwed, so that the application range is enlarged.

As shown in fig. 10, as an optimization of the embodiment, considering that the position of the leg and the foot is changed greatly, a binding band 35 with an open and close middle part is sewn between the sleeves 29, and the joint of the binding band 35 is positioned by a magic tape, so that stable binding positioning can be performed after the angle of the leg and the foot is changed, and the application range is wide.

Application scenarios and working principles: when a patient does lower limb CTA, the patient places legs on a first bearing part 2, a second bearing part 3 and a third bearing part 4, wherein the first bearing part 2 and the second bearing part 3 enable the legs of the patient to bend knees for placement, the second bearing part 3 and the third bearing part 4 enable the feet of the patient to be placed on foot tightening surfaces, then the hands of the patient are pulled outwards through a handheld handle 14, the hole diameter between splints 15 can be enlarged, the patient can conveniently place the legs, after the legs are placed in the patient, a reset spring 17 pushes the splints 15 to clamp the legs after loosening, then narrow openings 20 between silica gel balls 19 of the feet of the patient are opened, the two rows of silica gel balls 19 can limit the feet, specifically, the positioning can be carried out at 6 degrees of freedom, and after the lower limb fixing is completed, CTA detection can be carried out; this application reasonable in design, simple structure for the shank is bent the knee and is placed, makes the foot face of stretching tight place, and the supplementary tight location of clamp of cooperation, convenient operation, spacing effectual has guaranteed going on smoothly of testing process, improves low limbs CTA's image quality.

It is to be understood that the present invention has been described with reference to certain embodiments and that various changes or equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention as defined by the appended claims. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims (9)

1. The utility model provides a fixing device bends knee of low limbs artery CT, including connecting seat (1), its characterized in that connecting seat (1) symmetry sets up, be equipped with first bearing part (2) of placing the thigh between connecting seat (1), be equipped with second bearing part (3) of placing the shank at the free end of first bearing part (2), and second bearing part (3) and the pivot position of first bearing part (2) form the contained angle that can bend the knee, be equipped with third bearing part (4) of placing the foot at the free end of second bearing part (3), and third bearing part (4) and the pivot position of second bearing part (3) form the contained angle that can stretch up the instep, be equipped with clamping piece (5) of shank location on first bearing part (2), be equipped with the piece (6) that compresses up of foot location on third bearing part (4).

2. The knee bending fixing device for lower limb artery CT according to claim 1 is characterized in that the first bearing part (2) comprises a pair of straight bars (7), an arc-shaped bar (8) is bonded between the straight bars (7) on one side of the connecting seat (1), the arc-shaped bar (8) is bent downwards, an inclined bar (9) is bonded at the free end of the straight bar (7), the arc-shaped bar (8) is bonded at the free end of the inclined bar (9), the straight bar (7), the inclined bar (9) and the arc-shaped bar (8) form a closed frame structure, and an arc-shaped plastic plate (10) is arranged on the frame structure.

3. The knee bending fixing device for lower extremity arterial CT according to claim 2, characterized in that the plastic plate (10) is provided with a sponge layer (11) on the upper surface.

4. The knee bending fixing device for the lower limb artery CT according to the claim 1 is characterized in that the third bearing part (4) is a flat structure.

5. The knee bending fixing device for lower limb artery CT according to claim 2 is characterized in that a clamping piece (5) is arranged on the side wall of the straight rod (7), the clamping piece (5) comprises a sliding sleeve (12) and a sliding rod (13), the sliding rod moves in the sliding sleeve (12) in a sliding connection manner, and the sliding direction of the sliding rod (13) is vertical to the leg; a handle (14) is arranged at the outer side end of the sliding rod (13), a clamping plate (15) is arranged at the inner side end of the sliding rod (13), the clamping plate (15) is arc-shaped, a sponge strip (16) is arranged on the clamping plate (15), and a return spring (17) is arranged on the side wall of the sliding rod (13) and fixed between the clamping plate (15) and the sliding sleeve (12) in an elastic connection mode.

6. The knee bending fixing device for the lower limb artery CT according to claim 1 is characterized in that the compressing member (6) comprises vertical rods (18) fixed on the third bearing part (4), the vertical rods (18) are arranged in two rows to limit the left and right movement of the foot, silicone balls (19) are arranged at the free ends of the vertical rods (18), and a narrow opening (20) encircling the foot is formed between the adjacent silicone balls (19).

7. The knee bending fixing device for the lower limb artery CT is characterized in that compression springs (21) are arranged in an upward matrix mode on a plastic plate (10) of a first bearing part (2), a pressing plate (22) is arranged at the free end of each compression spring (21), a concave cladding surface (23) is arranged on the top surface of each pressing plate (22), hinged seats (24) are arranged at two ends of the short side of each pressing plate (22), an L-shaped plate (25) is rotatably connected onto each hinged seat (24), the vertical section length of each L-shaped plate (25) is larger than the horizontal section length, leg clamping plates (26) are arranged on the vertical sections of the L-shaped plates (25), the calibers between the leg clamping plates (26) are reduced along with the descending of the pressing plates (22), and rod-shaped cotton (27) is arranged on the surfaces of the leg clamping plates (26).

8. The knee bending fixing device for the lower limb artery CT according to claim 1 is characterized in that the connecting seat (1) is connected with the first bearing part (2) through an angle positioning piece (28), the angle positioning piece (28) comprises a column seat (30) fixed on the connecting seat (1) and a sleeve (29) fixed on the first bearing part (2), a first tooth surface (31) is arranged on the inner side surface of the sleeve (29), a second tooth surface (32) meshed with the first tooth surface (31) is arranged on the outer side surface of the column seat (30), a screw rod (33) penetrating through an inner hole of the sleeve (29) is arranged in the center of the column seat (30), a hand wheel (34) which extrudes the sleeve (29) to be meshed with the column seat (30) is connected on the screw rod (33) in a threaded manner, the angle positioning piece (28) is arranged at the joint of the first bearing part (2) and the second bearing part (3), and the angle positioning piece (28) is arranged at the joint of the second bearing part (3) and the third bearing part (4).

9. The knee bending fixing device for the lower limb artery CT according to claim 8, characterized in that a bandage (35) with an open-close middle part is arranged between the sleeves (29), and the joint of the bandage (35) is positioned by a magic tape.

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