CN220801298U - Adjustable lower limb fixing device - Google Patents

Abstract

The utility model discloses an adjustable lower limb fixing device, and belongs to the technical field of medical care and appliances. An adjustable lower limb fixation device comprises a leg fixation mechanism for fixing the legs of a patient, wherein the leg fixation mechanism comprises a leg rest and an adjustment assembly for adjusting the angle of the leg rest, the leg rest fully separates the two legs of the patient, and the legs of the patient are fixed in an abduction neutral position, so that the involuntary external rotation, internal retraction or foot folding of the legs of the patient is prevented, and the high illness state is further aggravated. The angle of the leg rest is adjusted through the adjusting component, and the leg rest can be adapted to patients with different hip widths so as to meet the requirements of different patients.

Description

Adjustable lower limb fixing device

Technical Field

The utility model relates to the field of medical care and appliances, in particular to an adjustable lower limb fixing device.

Background

In the general hip fracture patients, in the postoperative rehabilitation process, the patients can sometimes swing out different degrees of external rotation or internal contraction or even foot overlapping by the lower limbs involuntarily when lying on the bed, and the postures can further aggravate the fracture dislocation of the hip and influence the postoperative rehabilitation of the patients.

At present, medical staff can recommend a patient to use a leg separating pillow with a trapezoidal cross section, which is used for fully separating two legs of the patient, so that the legs of the patient are continuously kept at the abduction neutral position, and the involuntary external rotation, internal retraction or foot folding of lower limbs of the patient are prevented, so that the high illness state is further aggravated.

However, the traditional trapezoid leg pillow is a common solid pillow pad, the size of the trapezoid leg pillow is fixed, the bevel angles at two sides of the trapezoid leg pillow are fixed, for patients with different hip widths, the trapezoid leg pillow with different angles and sizes needs to be replaced, and the single trapezoid leg pillow is difficult to meet the requirements of patients with different hip widths. The traditional trapezoid leg pillow can separate and fix the legs of a patient, but the feet of the patient still have slight outward rotation or inward retraction, so that the hip of the patient is affected, and the rehabilitation after hip operation of the patient is not facilitated over time.

Disclosure of utility model

In order to enable the leg rest to be suitable for patients with different hip widths and meet the requirements of the patients, the application provides an adjustable lower limb fixing device.

The application provides an adjustable lower limb fixing device which adopts the following technical scheme:

An adjustable lower limb fixing device comprises a leg fixing mechanism, wherein the leg fixing mechanism comprises two leg rest and an adjusting component for adjusting the angle between the two leg rest, and one ends of the two leg rest are mutually hinged;

The adjusting component comprises a hinging seat and a fixing seat, the hinging seat is hinged with the two leg-separating pillows, a screw rod and a guide rod which are parallel to each other are rotationally connected between the hinging seat and the fixing seat, a sliding block is connected to the periphery side of the screw rod in a threaded manner, the sliding block is in sliding connection with the guide rod, a supporting rod is hinged to one side of the sliding block, which faces the leg-separating pillows, and one end of the supporting rod, which is far away from the sliding block, is hinged to the inner side face of the leg-separating pillows.

Through adopting above-mentioned technical scheme, medical personnel makes the slider slide along the length direction of guide bar through rotating the lead screw, drives the bracing piece of slider both sides and struts two branch leg rest to changed the angle between the branch leg rest, made the branch leg rest can adapt to the patient of different hip width. And medical personnel can adjust the angle of dividing the leg pillow according to patient postoperative condition, make the patient can divide the leg pillow with comparatively comfortable angle centre gripping, not only be favorable to improving the comfort when patient's centre gripping divides the leg pillow, be favorable to patient's rehabilitation moreover.

Optionally, the lateral surface of leg rest is provided with first bandage, the one end of first bandage with the lower bottom surface of leg rest is connected, the other end of first bandage with the upper surface of leg rest is connected.

Through adopting above-mentioned technical scheme, the leg of patient is tied up and hugs closely in the lateral surface of leg rest to first bandage to prevent that the patient is in the involuntary Kick away leg rest of sleeping, make the patient still can fully separate through the leg rest in sleeping, keep the leg in abduction neutral position simultaneously, be favorable to patient's postoperative recovered.

Optionally, the first bandage is provided with first connecting piece, the upper surface of leg rest is provided with first mating piece, first connecting piece with can dismantle between the first mating piece and be connected.

Through adopting above-mentioned technical scheme, the one end of first bandage can be dismantled with the upper surface of branch leg pillow and be connected, is favorable to medical personnel to fix the leg of patient with branch leg pillow and tie up.

Optionally, an arc-shaped groove is formed on the outer side surface of the leg-separating pillow.

By adopting the technical scheme, the arc-shaped groove enables the leg separating pillow to be clung to the inner side of the leg of the patient, thereby improving the comfort of the patient when clamping the leg separating pillow.

Optionally, the lower limb fixing device further comprises a foot fixing mechanism, wherein the foot fixing mechanism is arranged at one end of the leg separating pillow far away from the hinge joint, and the foot fixing mechanism comprises a T-shaped shoe; the T-shaped shoes comprise foot pads, the two sides of each foot pad are connected with uppers, a second binding belt is connected between the two uppers, a limit component is arranged at the heel part of each foot pad and used for fixing the angle of each foot pad.

Through adopting above-mentioned technical scheme, second bandage and callus on the sole both sides vamp are fixed patient's foot on the callus on the sole, because patient's foot is fixed on the callus on the sole, is fixed the swing angle of callus on the sole through spacing subassembly, and the patient's foot of fixing on the callus on the sole can not swing left and right at will to the condition that has prevented that patient's foot slightly revolves outward or adduction when unconscious takes place, cooperation divides leg rest to use, further makes patient's low limbs can keep abduction neutral position for a long time, is favorable to patient to recovered.

Optionally, one end of the second bandage is fixedly connected with the vamp on one side, the other end of the second bandage is provided with a second connecting piece, the vamp on the other side is provided with a second matching piece, and the second connecting piece is detachably connected with the second matching piece.

Through adopting above-mentioned technical scheme, the one end and the vamp of second bandage can be dismantled and be connected, are favorable to medical personnel to fix patient's foot and callus on the sole.

Optionally, spacing subassembly includes regulating plate and gag lever post, the gag lever post is located the both sides of regulating plate, curved adjustment tank has been seted up to the regulating plate, the callus on the sole is provided with the connecting rod, the connecting rod with adjustment tank sliding connection, the connecting rod is kept away from the one end of callus on the sole passes adjustment tank threaded connection has to support tight piece.

Through adopting above-mentioned technical scheme, when the connecting rod slides along the arc in the adjustment tank, the angle between gag lever post and the callus on the sole of regulating plate both sides changes thereupon to can adjust the angle between callus on the sole and the gag lever post through rotating the regulating plate. Then screw up along the screw thread of connecting rod and support tight piece, make support tight piece and regulating plate fully support tightly between supporting tightly to with regulating plate and callus on the sole fully support tightly, thereby fixed the angle between callus on the sole and the gag lever post. Through adjusting the angle between callus on the sole and the gag lever post, medical personnel can fix the foot of patient at different angles according to patient's condition, is favorable to patient's recovery.

Optionally, the foot fixing mechanism further comprises an ankle pillow, and the ankle pillow is arranged at one end of the leg dividing pillow, which is close to the T-shaped shoes.

Through adopting above-mentioned technical scheme, the ankle pillow locates the one end that divides the leg pillow to be close to the T shoes, corresponds patient's ankle part for the ankle of bed hedgehopping patient, thereby can promote the blood circulation of foot, be favorable to patient's postoperative rehabilitation. And after the ankle of the patient is raised, the medical staff can conveniently fix the foot of the patient on the T-shaped shoes.

In summary, the present application has at least any one of the following advantages:

1. The angle between the two leg rest is adjusted through the adjusting component, and the leg rest can be adapted to patients with different hip widths, so that the requirements of the patients are met.

2. The T-shaped shoes are arranged to fix the feet of the patient, so that the situation that the feet of the patient slightly rotate outwards or retract inwards when unconscious is prevented, and the lower limbs of the patient can be further kept in the abduction neutral position for a long time by being matched with the leg separating pillow for use, and the rehabilitation of the patient is facilitated.

3. The angle between the foot pad and the limiting rod of the T-shaped shoes is adjusted through rotating the adjusting plate, and medical staff can fix the feet of a patient at different angles according to the condition of the patient, so that the recovery of the patient is facilitated.

Drawings

Fig. 1 is a schematic front view of an adjustable lower extremity immobilization apparatus according to an embodiment of the present application.

Fig. 2 is a schematic structural view of an adjusting assembly in an embodiment of the present application.

Fig. 3 is an enlarged view of a portion of fig. 1.

Fig. 4 is a schematic view of the back side structure of an adjustable lower extremity immobilization apparatus according to an embodiment of the present application.

Fig. 5 is a partial enlarged view of b in fig. 4.

Reference numerals illustrate:

1. Leg fixing means; 11. a leg separating pillow; 111. a hinge; 112. a first strap; 113. a first connector; 114. a first mating member; 115. an arc-shaped groove; 12. an adjustment assembly; 121. a hinge base; 122. a fixing seat; 123. a screw rod; 124. a guide rod; 125. a slide block; 126. rotating the handle; 127. a support rod; 2. a foot fixing mechanism; 21. an ankle pillow; 22. t-shoes; 221. foot pads; 222. a vamp; 223. a second strap; 224. a limit component; 2241. an adjusting plate; 22411. an adjustment tank; 2242. a limit rod; 2243. a connecting rod; 2244. a tightening member; 225. a second connector; 226. and a second mating member.

Detailed Description

The application is described in further detail below with reference to fig. 1-5.

The embodiment of the application discloses an adjustable lower limb fixing device. Referring to fig. 1, an adjustable lower limb fixation apparatus includes a leg fixation mechanism 1 and a foot fixation mechanism 2. Wherein the leg fixation mechanism 1 is used to secure the patient's legs, separating the two legs of the patient, keeping the patient's legs in the abduction neutral position. The foot fixing mechanism 2 is arranged at one end of the leg fixing mechanism 1 corresponding to the foot of the patient and used for further limiting the foot of the patient and preventing the patient from unconsciously rotating outwards or adducting the foot when sleeping, thereby influencing the postoperative rehabilitation of the hip of the patient.

Referring to fig. 1, the leg fixing mechanism 1 includes two leg rest 11 and an adjusting assembly 12 provided between the two leg rest 11. Wherein the adjustment assembly 12 is capable of adjusting the angle between the two leg rest 11 so that the leg rest 11 can be adapted to patients of different hip widths.

Referring to fig. 1, the leg rest 11 is connected with two hinge members 111 at one end corresponding to the crotch of the patient, the two leg rest 11 are hinged to each other by the hinge members 111, and the two hinge members 111 are respectively positioned at one end of the leg rest 11 near the bed and one end of the leg rest 11 far from the bed. The outer side surface of the leg rest 11 is provided with a plurality of first binding bands 112, and the first binding bands 112 are uniformly distributed along the length direction of the leg rest 11 and are used for integrally fixing the legs of a patient on the outer side surface of the leg rest 11. In order to enable the first strap 112 to adapt to patients with different leg thicknesses, the first strap 112 may be made of elastic materials such as elastic bands and elastic bands, and in this embodiment, the elastic bands used for the first strap 112 are elastic bands. Because the first binding band 112 is elastic, the first binding band 112 can bind the leg of the patient tightly and cling to the outer side surface of the leg rest 11, so that the leg rest 11 is prevented from being kicked away by the patient in a sleeping state, the leg of the patient can still be fully separated through the leg rest 11, and the abduction neutral position is maintained, thereby being beneficial to postoperative rehabilitation of the patient.

Referring to fig. 1, specifically, one end of the first strap 112 is fixedly connected to the lower bottom surface of the leg rest 11, and the other end of the first strap 112 is detachably connected to the upper surface of the leg rest 11. Specifically, the first binding band 112 is provided with a first connecting piece 113, and the upper surface of the leg rest 11 is provided with a first mating piece 114 mated with the first connecting piece 113, and the first connecting piece 113 and the first mating piece 114 are mated with each other and detachably connected. Wherein, the first connecting piece 113 and the first matching piece 114 can be detachable connecting pieces with male piece and female piece structures, in this embodiment, the first connecting piece 113 and the first matching piece 114 are all made of velcro, specifically, the first connecting piece 113 is made of velcro hook surface, and the first matching piece 114 is made of velcro hook surface. The first binding band 112 and the leg separating pillow 11 are detachably connected through the hook-and-loop fastener surface and the hook-and-loop fastener surface, so that medical staff can fix the legs of a patient on the leg separating pillow 11 conveniently.

Referring to fig. 1, in order to make the outer side surface of the leg rest 11 more closely contact with the inner side of the leg of the patient, an arc groove 115 is provided at a side of the leg rest 11 facing the leg of the patient, so that when the leg of the patient is fixed to the outer side surface of the leg rest 11 by the first strap 112, the arc groove 115 enables the leg rest 11 to closely contact with the inner side of the leg of the patient, thereby improving the comfort of the patient when the patient clamps the leg rest 11.

Referring to fig. 2, the adjusting assembly 12 includes a hinge base 121, a fixing base 122, a screw rod 123 and a guide rod 124 provided between the hinge base 121 and the fixing base 122, a slider 125 simultaneously sleeved on outer circumferential sides of the screw rod 123 and the guide rod 124, and a rotation handle 126 for driving the screw rod 123 to rotate. The hinge seat 121 is disposed at one end of the leg rest 11 corresponding to the crotch of the patient, and is disposed between the two hinge members 111, and two ends of the hinge seat 121 are hinged to the two leg rest 11. One end of a screw rod 123 is rotatably connected with the center of the hinging seat 121, the screw rod 123 extends towards one end of the leg rest 11 far away from the crotch of the patient along the center axis between the two leg rest 11, one end of the screw rod 123 far away from the hinging seat 121 penetrates through the fixing seat 122 to be fixedly connected with the rotary handle 126, and the screw rod 123 is rotatably connected with the fixing seat 122. One end of the guide rod 124 is fixedly connected with the hinging seat 121, the other end of the guide rod 124 is fixedly connected with the fixing seat 122, the guide rod 124 is parallel to the screw rod 123, the fixing seat 122 is fixedly limited through the guide rod 124, and when the medical staff rotates the rotating handle 126, the fixing seat 122 cannot rotate along with the screw rod 123.

Referring to fig. 2, the slider 125 is simultaneously sleeved on the outer circumferential sides of the screw rod 123 and the guide rod 124, specifically, the slider 125 is in threaded connection with the screw rod 123, and the slider 125 is in sliding connection with the guide rod 124. Because the sliding block 125 is in sliding connection with the screw rod 123, and the screw rod 123 is limited by the guide rod 124, when the medical staff rotates the handle 126, the screw rod 123 rotates, so that the sliding block 125 is driven to slide back and forth along the extending direction of the screw rod 123 and the guide rod 124. The two sides of the sliding block 125 facing the leg are hinged with supporting rods 127, and because the adjusting component 12 is positioned between the two leg rest 11, one end of the supporting rod 127 away from the sliding block 125 is hinged with the inner side surface of the leg rest 11, and the distance between the hinged position of the supporting block and the leg rest 11 and the hinged seat 121 is smaller than the distance between the fixed seat 122 and the hinged seat 121. When the slider 125 slides from the fixed base 122 toward the hinge base 121, the support bar 127 can gradually prop the two leg rest 11 open, thereby changing the angle between the two leg rest 11.

Referring to fig. 1 and 3, foot immobilization mechanism 2 includes an ankle pillow 21 and a t-shoe 22. Wherein, the ankle pillow 21 is disposed at one end of the leg rest 11 near the foot of the patient, and the ankle pillow 21 extends perpendicular to the length direction of the leg rest 11 and toward a direction away from the leg rest 11, and the ankle pillow 21 is used for raising the ankle of the patient. The T-shoe 22 is provided on the side of the ankle pillow facing away from the leg rest 11 for further securing the patient's foot.

Referring to fig. 1 and 3, the t-shaped shoe 22 includes a foot pad 221, uppers 222 provided at both sides of the foot pad 221, second straps 223 connecting the uppers 222 at both sides, and a limit assembly 224 provided at a corresponding heel of the foot pad 221. Wherein, vamp 222 is used for fixing patient's foot to cooperate with second bandage 223 with patient's foot with fix on callus on sole 221, and spacing subassembly 224 is used for fixing the angle between callus on sole 221 and the bed, thereby can fix the angle between patient's foot and the bed, prevent that patient's foot from being in unconscious state supination or adduction, be favorable to patient's postoperative rehabilitation.

Referring to fig. 1 and 3, one end of the second strap 223 is fixedly connected with the outer side surface of the upper 222 on one side of the foot pad 221, and the other end is detachably connected with the outer side surface of the upper 222 on the other side of the foot pad 221, specifically, the second strap 223 is provided with a second connecting member 225, the outer side surface of the upper 222 is provided with a second mating member 226 mated with the second connecting member 225, and the second connecting member 225 and the second mating member 226 are mated and connected with each other. Wherein, the second connecting piece 225 and the second matching piece 226 may be detachable connecting pieces with male-female piece structures, in this embodiment, the second connecting piece 225 and the second matching piece 226 are all hook-and-loop fasteners, and specifically, the second connecting piece 225 is a hook-and-loop fastener surface, and the second matching piece 226 is a hook-and-loop fastener surface. The second binding band 223 and the vamp 222 are detachably connected through the hook-and-loop fastener and the hook-and-loop fastener, so that medical staff can fix the feet of a patient conveniently.

In order to make the second strap 223 sufficiently fix the foot of the patient to the foot pad 221, the second strap 223 may be made of elastic materials such as elastic band and elastic band, and in this embodiment, the elastic band used for the second strap 223 is selected.

Referring to fig. 4 and 5, the limit assembly 224 includes an adjusting plate 2241 connected to the foot pad 221, and two limit bars 2242 provided at both sides of the adjusting plate 2241. The adjusting plate 2241 is disposed on one side of the foot pad 221 away from the vamp 222 and is located at a heel position of the foot pad 221, and the extending directions of the limiting rod 2242 and the foot pad 221 are perpendicular to each other and extend towards two sides of the foot pad 221. Specifically, the foot pad 221 is provided with two connecting rods 2243 on one side facing away from the foot of the patient, the adjusting plate 2241 is provided with two arc-shaped adjusting grooves 22411 corresponding to the two connecting rods 2243, when the adjusting plate 2241 is connected with the foot pad 221, the connecting rods 2243 penetrate through the adjusting grooves 22411, and the connecting rods 2243 are slidably connected with the adjusting grooves 22411, i.e. the connecting rods 2243 can slide along the arc shape of the adjusting grooves 22411. When the connecting rod 2243 slides along the arc in the adjusting groove 22411, the angle between the limiting rods 2242 on two sides of the adjusting plate 2241 and the foot pad 221 is changed accordingly, so that the angle between the foot pad 221 and the limiting rods 2242 can be adjusted by rotating the adjusting plate 2241, the medical staff can be fixed on different angles according to the foot condition of the patient, and the postoperative rehabilitation of the patient is facilitated.

Referring to fig. 4 and 5, the end of the connecting rod 2243 remote from the footpad 221 is threaded with the tightening member 2244, the adjusting plate 2241 is located between the footpad 221 and the tightening member 2244, the tightening member 2244 is fully tightened with the adjusting plate 2241 by rotating the tightening member 2244 along the threads on the connecting rod 2243, and the adjusting plate 2241 is fully tightened with the footpad 221, at this time, the adjusting plate 2241 cannot be rotated at will to adjust the angle between the limiting rod 2242 and the footpad 221. Conversely, by rotating the tightening member 2244 to release the tightening member 2244, the adjustment plate 2241 can be rotated to adjust the angle between the stop bar 2242 and the footpad 221.

The implementation principle of the adjustable lower limb fixing device provided by the embodiment of the application is as follows:

When the lower limb fixing device is used, medical staff rotates the rotating handle 126 to drive the screw rod 123 to rotate according to the width and rehabilitation condition of the hip of a patient, so that the sliding block 125 slides along the guide rod 124 towards the hinging seat 121 to drive the support rods 127 on two sides to prop up the two leg rest 11, and accordingly the angle between the two leg rest 11 is adjusted. After the leg rest 11 is adjusted to an appropriate angle, the leg rest 11 is sandwiched between the two legs of the patient, and the ankle of the patient is put on the ankle rest 21. The patient's leg is then wrapped around the patient's leg by first strap 112, and the patient's leg is secured to the outside face of the leg rest 11 by a plurality of first straps 112.

After the leg fixing of the patient is completed, the medical staff inserts the foot of the patient into the T-shoe 22, and fixes the foot of the patient on the foot pad 221 through the plurality of second binding bands 223 and the upper 222.

After the patient's foot is secured, the healthcare worker releases the tightening member 2244 to allow the adjustment plate 2241 to rotate. Then, according to the leg condition of the patient, the medical staff rotates the adjusting plate 2241, adjusts the angle between the limiting rods 2242 at both sides of the adjusting plate 2241 and the foot pad 221, and then tightens the abutting piece 2244 to keep the angle between the foot pad 221 and the limiting rods 2242 fixed, and at this time, the foot of the patient is fixed at a proper angle along with the foot pad 221.

Under the mutual fixation of the leg fixing mechanism 1 and the foot fixing mechanism 2, the lower limbs of the patient can be continuously kept at the abduction neutral position, which is not only beneficial to the postoperative rehabilitation of the patient, but also beneficial to preventing the occurrence of the condition that the patient unconsciously uses the lower limbs to carry out external rotation, internal retraction or foot folding, resulting in further aggravation of the illness state.

The present embodiment is merely illustrative of the present application and not limiting, and one skilled in the art, after having read the present specification, may make modifications to the embodiment without creative contribution as required, but is protected by patent law within the scope of the claims of the present application.

Claims (8)

1. An adjustable lower limb fixation apparatus, characterized in that: the leg fixing mechanism (1) comprises two leg rest (11) and an adjusting component (12) for adjusting the angle between the two leg rest (11), wherein one ends of the two leg rest (11) are hinged with each other;

The utility model provides an adjustable component (12) is including articulated seat (121) and fixing base (122), articulated seat (121) and two divide leg pillow (11) articulated, articulated seat (121) with be connected with lead screw (123) and guide arm (124) that are parallel to each other between fixing base (122), guide arm (124) with lead screw (123) are parallel to each other, the periphery side threaded connection of lead screw (123) has slider (125), slider (125) with guide arm (124) sliding connection, slider (125) are articulated towards one side of dividing leg pillow (11) have bracing piece (127), bracing piece (127) are kept away from one end of slider (125) with divide the medial surface of leg pillow (11) articulated.

2. An adjustable lower extremity fixation apparatus according to claim 1, wherein: the outer side face of the leg separating pillow (11) is provided with a first binding band (112), one end of the first binding band (112) is connected with the lower bottom face of the leg separating pillow (11), and the other end of the first binding band (112) is connected with the upper surface of the leg separating pillow (11).

3. An adjustable lower extremity fixation apparatus according to claim 2, wherein: the first binding band (112) is provided with a first connecting piece (113), a first matching piece (114) is arranged on the upper surface of the leg separating pillow (11), and the first connecting piece (113) is detachably connected with the first matching piece (114).

4. An adjustable lower extremity fixation apparatus according to claim 2, wherein: an arc-shaped groove (115) is formed in the outer side face of the leg separating pillow (11).

5. An adjustable lower extremity fixation apparatus according to claim 1, wherein: the lower limb fixing device further comprises a foot fixing mechanism (2), the foot fixing mechanism (2) is arranged at one end, far away from the hinge, of the leg separating pillow (11), and the foot fixing mechanism (2) comprises a T-shaped shoe (22);

The T-shaped shoes (22) comprise foot pads (221), vamp (222) are connected to two sides of each foot pad (221), second binding bands (223) are connected between the two vamp (222), limit components (224) are arranged at heel parts of the foot pads (221), and the limit components (224) are used for fixing angles of the foot pads (221).

6. An adjustable lower extremity fixation apparatus according to claim 5, wherein: one end of the second binding band (223) is fixedly connected with the vamp (222) on one side, a second connecting piece (225) is arranged at the other end of the second binding band (223), a second matching piece (226) is arranged on the vamp (222) on the other side, and the second connecting piece (225) is detachably connected with the second matching piece (226).

7. An adjustable lower extremity fixation apparatus according to claim 5, wherein: limiting component (224) are including regulating plate (2241) and gag lever post (2242), gag lever post (2242) are located the both sides of regulating plate (2241), arc adjustment tank (22411) have been seted up to regulating plate (2241), callus on the sole (221) are provided with connecting rod (2243), connecting rod (2243) with adjustment tank (22411) sliding connection, connecting rod (2243) keep away from the one end of callus on the sole (221) is passed adjustment tank (22411) threaded connection has to support tight piece (2244).

8. An adjustable lower extremity fixation apparatus according to claim 5, wherein: the foot fixing mechanism (2) further comprises an ankle pillow (21), and the ankle pillow (21) is arranged at one end, close to the T-shaped shoes (22), of the leg separating pillow (11).