CN214343267U

CN214343267U - Knee joint fixing support frame

Info

Publication number: CN214343267U
Application number: CN202022697355.4U
Authority: CN
Inventors: 闫晓刚; 刘铁昌; 张淼
Original assignee: Tinavi Medical Technologies Co Ltd
Current assignee: Tinavi Medical Technologies Co Ltd; Beijing Tinavi Medical Technology Co Ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-10-08
Anticipated expiration: 2030-11-23

Abstract

The application relates to a knee joint fixing support frame. The knee joint fixed bolster includes: the fixing frame comprises a guide rail clamp and a lifting rod, the guide rail clamp is used for being connected with a guide rail of the operating table, the lifting rod is arranged on the guide rail clamp, and the height of the lifting rod is adjustable; wherein, the number of the fixed frames is two; two ends of the supporting rod are respectively connected with the top ends of the two fixing frames; the knee joint splint is arranged on the support rod and used for clamping the knee joint. The knee joint fixing support frame is convenient to operate, is firm in fixing the knee joint, and can guarantee the precision of osteotomy.

Description

Knee joint fixing support frame

Technical Field

The application relates to the field of medical equipment, in particular to a knee joint fixing and supporting frame.

Background

At present, the lower limb fixing mechanism for total knee replacement surgery (TKA) mostly adopts the situation of a foot rest bracket. The foot support bracket can not firmly fix the knee joint, so that a doctor assistant is required to keep the knee joint relatively fixed in the processes of holding legs, pressing and the like in order to achieve good osteotomy precision. As the existing lower limb fixing frame, the popliteal fossa frame adopts a cantilever beam structure, although the basic requirement of lower limb fixation can be met, the fixed rigidity can not meet the requirement of system precision, and if the knee joint shakes in the operation, the operation quality is influenced.

SUMMERY OF THE UTILITY MODEL

Based on this, the application provides a knee joint fixation support frame for stably fixing a knee joint in a total knee joint replacement operation so as to achieve a desired osteotomy precision.

One embodiment of the present application provides a knee joint fixation support frame, including: the fixing frame comprises a guide rail clamp and a lifting rod, the guide rail clamp is used for being connected with a guide rail of the operating table, the lifting rod is arranged on the guide rail clamp, and the height of the lifting rod is adjustable; the number of the fixing frames is two; two ends of the supporting rod are respectively connected with the top ends of the two fixing frames; the knee joint splint is arranged on the support rod and used for clamping the knee joint.

According to some embodiments of the application, the rail clip comprises: the clamp body is C-shaped, the bottom of the C-shaped opening is upwards inclined to extend out of an inclined part, the inclined part is provided with a first threaded hole and a guide hole, and the axes of the first threaded hole and the guide hole are perpendicular to the upper surface of the inclined part; the fixture block is provided with a guide rod, the guide rod penetrates through the guide hole, and the fixture block can slide along the direction vertical to the upper surface of the inclined part; and the locking bolt is in threaded connection with the first threaded hole and penetrates through the first threaded hole to abut against the clamping block.

According to some embodiments of the present application, the top of the fixture block is provided with a bayonet matched with the bottom surface and the side surface of the operating table guide rail.

According to some embodiments of the application, the lifter comprises: the base rod is arranged on the upper surface of the guide rail clamp and comprises a cavity with an opening at the top end; the adjusting rod is arranged in the cavity of the base rod and can slide along the axis of the base rod; and the locking assembly is used for locking the adjusting rod.

According to some embodiments of the application, the locking assembly comprises: the locking ring is in a circular truncated cone shape, the center of the locking ring is provided with a first through hole, and the side wall of the locking ring is provided with a notch communicated with the first through hole; the locking cover comprises a stepped hole, the stepped hole comprises a large-diameter part and a small-diameter part, internal threads are arranged on the inner wall of the large-diameter part, and the diameter of the small-diameter part is smaller than that of the large-diameter end of the locking ring; the opening of the cavity of the base rod is in a circular truncated cone shape matched with the locking ring, the locking ring is arranged at the opening, the locking cover is connected with the external thread at the top end of the base rod through internal threads, the adjusting rod penetrates through the stepped hole and the first through hole of the locking ring, the locking cover presses the locking ring downwards, the opening extrudes the locking ring to shrink, and the locking ring locks the adjusting rod.

According to some embodiments of the application, set up on the outer wall of adjusting the pole and follow a plurality of fish tape grooves that the axis of adjusting the pole was arranged in proper order, set up on the lateral wall of basis pole with fish tape groove complex spring plug pin.

According to some embodiments of the application, the top end of the adjusting rod is detachably connected with the supporting rod through a hoop.

According to some embodiments of the present application, a knee splint comprises: the outer wall of the popliteal pad rod comprises a concave surface, and the popliteal pad rod is sleeved on the supporting rod in a sliding way and locked by a screw; the first vertical rod and the second vertical rod are respectively arranged at two ends of the popliteal pad rod; one end of the upper pressure plate is detachably connected with the first upright stanchion, the other end of the upper pressure plate is detachably connected with the second upright stanchion, and the upper pressure plate comprises a first guide groove and a second guide groove which are oppositely arranged; the first pressing block is positioned below the upper pressing plate, can slide along the first guide groove through the first connecting column and is locked through the first nut; and the second pressing block is positioned below the upper pressing plate, can slide along the second guide groove through a second connecting column and is locked through a second nut.

According to some embodiments of the present application, a first clamping groove and a second clamping groove are respectively disposed at two ends of the upper platen; a plurality of bosses are sequentially arranged on the outer wall of the first vertical rod along the axis of the first vertical rod, and the first clamping groove is clamped between two adjacent bosses; the second vertical rod penetrates through the second clamping groove, and a third nut used for locking the upper pressing plate is arranged on the second vertical rod.

According to some embodiments of the present application, the second leg is hinged to the popliteal bolster.

The knee joint fixing support frame of this application, mount are fixed on the operation table guide rail, and two mounts are by both ends fixed support pole respectively, and knee joint can be fixed firmly to the knee joint splint on the bracing piece. The fixed rigidity of the knee joint can meet the precision requirement, so that the osteotomy precision meets the expected requirement.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without exceeding the protection scope of the present application.

FIG. 1 is a schematic view of a knee joint fixation brace according to an embodiment of the present application;

FIG. 2 is a schematic view of a rail clip of an embodiment of the present application;

FIG. 3 is an exploded view of a rail clip according to an embodiment of the present application;

FIG. 4 is a schematic view of a clip body according to an embodiment of the present application;

FIG. 5 is a schematic view of a cartridge according to an embodiment of the present disclosure;

FIG. 6 is an exploded view of a lifter bar according to an embodiment of the present application;

FIG. 7 is a cross-sectional view of a base pole of an embodiment of the present application;

FIG. 8 is a schematic view of a locking ring of an embodiment of the present application;

FIG. 9 is a schematic view of a locking cap of an embodiment of the present application;

FIG. 10 is a schematic view of an adjustment lever of an embodiment of the present application;

FIG. 11 is a schematic view of a knee splint according to an embodiment of the present application;

FIG. 12 is a schematic view of an upper platen of an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1, an embodiment of the present application provides a knee fixation support 100. The knee joint fixing support 100 includes a fixing frame 10, a support rod 3 and a knee joint splint 4. Knee joint fixing support frame 100 is arranged in the total knee joint replacement operation, and the operation table both sides are equipped with the guide rail respectively, and mount 10 is fixed on the operation table guide rail through the mode that presss from both sides tightly, and bracing piece 3 supports through mount 10, and knee joint splint 4 cover is on bracing piece 3 for press from both sides tight knee joint. The knee joint fixing support frame 100 of the embodiment can firmly fix the knee joint and can meet the precision requirement of the osteotomy surface.

The fixing frame 10 includes a rail clip 1 and a lifting rod 2. The guide rail clamp 1 is used for clamping a guide rail of an operating table. The lifting rod 2 is arranged on the guide rail clamp 1, and the height of the lifting rod 2 can be adjusted to adjust the height of the knee joint splint 4, so that the knee joint splint 4 is aligned with the knee joint part of the patient. In this embodiment, the number of the fixing frames 10 is two, and the two fixing frames 10 are respectively disposed on two sides of the operating table.

The two ends of the supporting rod 3 are respectively connected with the top ends of the two fixing frames 10, and the fixing frames 10 play a supporting role in supporting the supporting rod 3. In this embodiment, the support rod 3 is detachably connected to the two fixing frames 10. The support bar 3 and the two fixing frames 10 form a similar structure of 20866;, which is arranged on the operating bed.

The knee joint splint 4 is arranged on the support rod 3, and the knee joint splint 4 is used for clamping the knee joint, so that the movement of the knee joint in the operation is avoided. If the knee joint moves during osteotomy, the precision of the osteotomy is influenced, and the quality of the whole operation is influenced.

The knee joint fixing support frame is supported through the two fixing frames, the rigidity of the knee joint fixing support frame is high, the knee joint is clamped firmly, unacceptable movement of the knee joint in an operation can be avoided, and the osteotomy precision can meet the expected requirement.

As shown in fig. 2 and 3, according to an alternative embodiment of the present application, the rail clamp 1 includes a clamp body 11, a latch 12, and a locking pin 13. The latch 12 and the locking bolt 13 are disposed on the clip body 11. The clamp body 11 is sleeved on the guide rail of the operating table, and the clamp block 12 is matched with the locking bolt 13 to lock the clamp body 11 on the guide rail of the operating table.

As shown in fig. 4, the clip body 11 is C-shaped. The bottom of the C-shaped opening of the clamp body 11 extends upward and slants to form a slant portion 111. The inclined portion 111 is inclined in a direction extending from the bottom surface of the clip body 11 to a vertical portion away from the C-shape. In this embodiment, the angle α between the inclined portion 111 and the bottom surface of the clip body 11 is 135 °. The inclined portion 111 is provided with a first threaded hole 112 and two guide holes 113, in this embodiment, the number of the guide holes 113 is two, and the two guide holes 113 are respectively provided on both sides of the first threaded hole 112. The axes of the first screw hole 112 and the guide hole 113 are perpendicular to the upper surface of the inclined portion 111.

The guide rods 121 are disposed on the bottom surface of the latch 12, and the number of the guide rods 121 is two in this embodiment, and the two guide rods correspond to the two guide holes 113 respectively. The guide rod 121 passes through the guide hole 113 and the latch 12 is slidable in a direction perpendicular to the upper surface of the inclined portion 111. The guide rod 121 guides the sliding of the latch 12.

The locking bolt 13 is threadedly coupled to the first threaded bore 112. The locking bolt 13 is rotated, the locking bolt 13 passes through the first threaded hole 112 to abut against the fixture block 12, and pushes the fixture block 12 to slide in a direction away from the upper surface of the inclined portion 111, so that the fixture block 12 clamps the guide rail of the operating table, and the guide rail clamp 1 is fixed on the guide rail of the operating table. When the guide rail clamp 1 needs to be detached, the locking bolt 13 is rotated reversely, the fixture block 12 slides towards the direction close to the upper surface of the inclined part 111, the fixture block 12 is separated from the guide rail of the operating table, and the guide rail clamp 1 can be detached from the guide rail of the operating table.

As shown in fig. 5, according to an alternative embodiment of the present application, the top of the fixture block 12 is provided with a bayonet 122 for engaging with the bottom surface and the side surface of the surgical bed guide rail. The fixture block 12 clamps the guide rail of the operating table through the bayonet 122, so that the fixture block 12 is tightly attached to the guide rail of the operating table, and the guide rail clamp 1 and the guide rail of the operating table are firmly fixed.

In this embodiment, fixture block 12 is along 45 oblique movement, makes guide clamp 1 compress tightly operation table guide rail a week, and compare by from under or the side top tightly with traditional guide clamp, the guide clamp 1 of this embodiment can provide better connection fixed rigidity.

Optionally, a vertical portion 114 extends downwards from the top of the C-shaped opening of the clip body 11, and the vertical portion 114 is located right above the inclined portion 111, so that a rectangular cavity 115 is formed inside the clip body 11. The cross-section of the guide rail of the operating bed is also rectangular, and when the guide rail clamp 1 is installed on the guide rail of the operating bed, the guide rail clamp 1 is sleeved on the guide rail of the operating bed through the rectangular cavity 115, so that the guide rail clamp 1 is convenient to be matched with the guide rail of the operating bed. The guide rail clamp 1 is sleeved on the guide rail of the operating table from one end of the guide rail of the operating table, the locking bolt 13 is screwed after the guide rail clamp 1 is moved to a proper position, and the clamping block 12 and the clamp body 11 are matched to clamp the guide rail of the operating table.

As shown in fig. 6, according to an alternative embodiment of the present invention, the lift lever 2 includes: a base rod 21, an adjusting rod 22 and a locking assembly 23.

As shown in fig. 7, a base bar 21 is provided on the upper surface of the rail clip 1. Alternatively, the base rod 21 is integrally formed with the clip body 11. Inside the base bar 21 is a cavity 211, and an opening 2111 is provided at the top end of the cavity 211.

The adjustment rod 22 is inserted into the cavity 211 of the base rod 21 to be slidable along the axis of the base rod 21, so that the height of the lifting rod 2 can be adjusted. The top end of the adjustment lever 22 is located outside the opening 2111. After the height of the lifting rod 2 is adjusted to the right position, the locking assembly 23 is used for locking the adjusting rod 22.

According to an alternative embodiment of the present application, the locking assembly 23 includes a locking ring 231 and a locking cover 232. The locking ring 231 and locking cap 232 cooperate for locking the lever 22.

As shown in fig. 8, the lock ring 231 has a circular truncated cone shape. A first through hole 2311 is formed at the center of the locking ring 231, and a gap 2312 extending from the upper surface to the lower surface of the locking ring 231 is formed in the sidewall. The slit 2312 penetrates through the side wall of the locking ring 231 and communicates with the first through hole 2311. The material that the catch 231 can select to have certain elasticity, and the lateral wall of catch 231 receives the extrusion force, and catch 231 contracts, and the width of opening 2312 diminishes, and catch 231 resumes after the extrusion force disappears.

As shown in fig. 9, the locking cap 232 is a stepped bore having a large diameter portion 232a and a small diameter portion 232b, and the large diameter portion 232a and the small diameter portion 232b communicate with each other. The inner wall of the large diameter portion 232a is provided with an internal thread. The small-diameter portion 232b has a diameter smaller than that of the large-diameter end of the lock ring 231.

The opening 2111 of the cavity of the base rod is shaped as a truncated cone that mates with the locking ring 231. The locking ring 231 is disposed at the opening 2111 with the small diameter end of the locking ring 231 facing downward and the large diameter end of the locking ring 231 located outside the opening 2111. The top of basic pole 21 sets up the external screw thread, and locking lid 232 is connected with the external screw thread on basic pole 21 top through the internal thread. The locking cover 232 is rotated, the locking cover 232 can move downwards, and the locking cover 232 is rotated reversely, so that the locking cover 232 moves upwards. The adjustment lever 22 passes through the small diameter portion 232b of the stepped hole of the locking cap 232 and the first through hole 2311 of the locking ring into the cavity 211. Rotating the locking cap 232 moves the locking cap 232 downward, and the locking cap 232 contacts the end smaller than the large diameter of the locking ring 231 and generates a downward pressure on the locking ring 231, so that the locking ring 231 moves downward. The locking ring 231 moves down, the side wall of the locking ring 231 is pressed by the inner wall of the opening 2111, and the locking ring 231 contracts. The locking ring 231 is retracted to lock the adjustment lever 22, so that the adjustment lever 22 cannot move. When the height of the lifting rod 2 needs to be adjusted, the locking cover 232 is rotated reversely to unlock the adjusting rod 22. It will be appreciated by those skilled in the art that other locking arrangements may be used for the locking assembly 23, as desired.

As shown in fig. 10, according to an alternative embodiment of the present invention, a plurality of fish-groove 221 are formed on the outer wall of the adjustment lever 22 and arranged in sequence along the axis of the adjustment lever. The side wall of the base rod 21 is provided with a spring insertion pin 212 which is matched with the fish-groove. The spring plug pin 212 is selected from existing spring plug pins. When no external force is applied, the spring insertion pin 212 is inserted into a fish-groove 221, so that the adjusting rod 22 does not slide freely during the height adjustment of the lifting rod 2. The cooperation of the spring plug pins 212 and the fishline grooves 221 facilitates the height adjustment of the lifting rod 2 when the fixed support frame 100 is used.

Optionally, the top end of the adjusting rod 22 is provided with an anchor ear 222, and the end of the supporting rod 3 is locked by the anchor ear 222, so as to detachably connect the adjusting rod 22 and the supporting rod 3.

As shown in fig. 11, the knee joint splint 4 includes: a popliteal bed bar 41, a first upright 42, a second upright 43, an upper press plate 44, a first press block 45 and a second press block 46. The knee splint 4 is used for clamping the knee joint.

The popliteal foot rest 41 is a rotator, and the outer wall of the popliteal foot rest 41 comprises a concave surface 411, so that the popliteal foot rest 41 is in a dumbbell shape. The concave surface 411 is arranged to increase the contact area of the popliteal pad rod 41 and the popliteal fossa, so as to avoid the formation of thrombus in the clamping process. The popliteal foot pad 41 is slidably sleeved on the support rod 3, and the axis of the popliteal foot pad 41 is collinear with the axis of the support rod 3. The popliteal bolster 41 is slidable along the axis of the support bar 3 and rotatable about the axis of the support bar 3. The popliteal foot pad 41 is locked by screws arranged at two ends of the popliteal foot pad 41.

The first vertical rod 42 and the second vertical rod 43 are respectively arranged at two ends of the popliteal bed bar 41, and the bottom end of the first vertical rod 42 and the bottom end of the second vertical rod 43 are connected with the popliteal bed bar 41.

As shown in fig. 12, one end of the upper pressing plate 44 is detachably connected to the first upright 42, and the other end of the upper pressing plate 44 is detachably connected to the second upright 43. The upper platen 44 includes a first guide groove 441 and a second guide groove 442 that are oppositely disposed. The first guide groove 441 and the second guide groove 442 each extend along the long side of the upper platen 44. Optionally, the lower surface of the upper pressure plate 44 is a concave arc surface 445, which facilitates the upper pressure plate 44 to press the knee joint from above.

The first pressing block 45 is located below the upper pressing plate 44, a first connecting column extends upwards from the top surface of the first pressing block 45, passes through the first guide groove 441 from bottom to top, and is slidable along the first guide groove 441. The first nut 451 is arranged on the first connecting column, the first nut 451 is located above the upper pressure plate 44, and after the first pressing block 45 moves to the right position, the first pressing block 45 is locked by tightening the first nut 451.

The second pressing block 46 is located below the upper pressing plate 44, a second connecting column extends upwards from the top surface of the second pressing block 46, passes through the second guide groove 442 from bottom to top, and is slidable along the second guide groove 442. A second nut 461 is arranged on the second connecting column, the second nut 461 is positioned above the upper pressure plate 44, and after the second pressing block 46 moves in place, the second pressing block 46 is locked by screwing the second nut 461.

The knee joint is clamped by the upper pressing plate 44 and the popliteal pad bar 41 from the up-down direction, and the knee joint is clamped by the first pressing piece 45 and the second pressing piece 46 from the left-right direction.

According to an optional aspect of the present disclosure, a first locking groove 443 and a second locking groove 444 are respectively disposed at two ends of the upper platen 44. A plurality of bosses 421 are sequentially arranged on the outer wall of the first vertical rod 42 along the axis of the first vertical rod, and an annular groove is formed between two adjacent bosses 421. The first locking groove 443 is locked in the annular groove between the adjacent two bosses 421. The second vertical rod 43 passes through the second clamping groove 444, a third nut 431 is arranged on the second vertical rod 43, the third nut 431 is located above the upper pressure plate 44, and the third nut 431 can lock the upper pressure plate 44. In use, the popliteal pad 41 supports the knee joint from below, the knee joint of the patient is placed between the first upright rod 42 and the second upright rod 43, the first clamping groove 443 of the upper pressing plate 44 is clamped into the appropriate annular groove of the first upright rod 42, the knee joint is pressed by the upper pressing plate 44 from above, and the third nut 431 is screwed to lock the upper pressing plate 44. Then, the positions of the first presser 45 and the second presser 46 are adjusted to fix the knee joint in the right-left direction.

According to an alternative solution of the present application, the second upright 43 is hinged to the popliteal bolster 41 by a pivot, facilitating the user's handling of the knee splint 4.

The use process of the knee joint fixing support frame of the embodiment is as follows:

two fixing frames 1 are respectively arranged on guide rails at two sides of the operating bed;

lifting the knee joint at the affected side, penetrating the support rod 3 from the side of the knee joint, and locking the hoop 222;

the height of the lifting rod 2 is adjusted to enable the popliteal pad rod 41 to support the knee joint;

an upper pressure plate 44 is installed, the positions of the first pressing block 45 and the second pressing block 46 are adjusted, and the knee joint is fixed.

The knee joint fixing support frame is high in rigidity, when the knee joint receives 80N acting force, the displacement of the knee joint is smaller than 1mm, and the rotation angle is smaller than 1 degree, so that the osteotomy precision meets the expected requirement.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the description of the embodiments is only intended to facilitate the understanding of the methods and their core concepts of the present application. Meanwhile, a person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of the present application. In view of the above, the description should not be taken as limiting the application.

Claims

1. A knee joint fixation support frame, comprising:

the fixing frame comprises a guide rail clamp and a lifting rod, the guide rail clamp is used for being connected with a guide rail of the operating table, the lifting rod is arranged on the guide rail clamp, and the height of the lifting rod is adjustable; the number of the fixing frames is two;

two ends of the supporting rod are respectively connected with the top ends of the two fixing frames;

the knee joint splint is arranged on the support rod and used for clamping the knee joint.

2. The knee fixation support frame of claim 1, wherein the rail clamp comprises:

the clamp body is C-shaped, the bottom of the C-shaped opening is upwards inclined to extend out of an inclined part, the inclined part is provided with a first threaded hole and a guide hole, and the axes of the first threaded hole and the guide hole are perpendicular to the upper surface of the inclined part;

the fixture block is provided with a guide rod, the guide rod penetrates through the guide hole, and the fixture block can slide along the direction vertical to the upper surface of the inclined part;

and the locking bolt is in threaded connection with the first threaded hole and penetrates through the first threaded hole to abut against the clamping block.

3. The knee joint fixing support frame according to claim 2, wherein the top of the fixture block is provided with a bayonet matched with the bottom surface and the side surface of the operating table guide rail.

4. The knee joint fixation support frame of claim 1, wherein the lifting rod comprises:

the base rod is arranged on the upper surface of the guide rail clamp and comprises a cavity with an opening at the top end;

the adjusting rod is arranged in the cavity of the base rod and can slide along the axis of the base rod;

and the locking assembly is used for locking the adjusting rod.

5. The knee joint fixation brace of claim 4, wherein the locking assembly comprises:

the locking ring is in a circular truncated cone shape, the center of the locking ring is provided with a first through hole, and the side wall of the locking ring is provided with a notch communicated with the first through hole;

the locking cover comprises a stepped hole, the stepped hole comprises a large-diameter part and a small-diameter part, internal threads are arranged on the inner wall of the large-diameter part, and the diameter of the small-diameter part is smaller than that of the large-diameter end of the locking ring;

the opening of the cavity of the base rod is in a circular truncated cone shape matched with the locking ring, the locking ring is arranged at the opening, the locking cover is connected with the external thread at the top end of the base rod through internal threads, the adjusting rod penetrates through the stepped hole and the first through hole of the locking ring, the locking cover presses the locking ring downwards, the opening extrudes the locking ring to shrink, and the locking ring locks the adjusting rod.

6. The knee joint fixing support frame according to claim 5, wherein a plurality of fish-line grooves are formed in the outer wall of the adjusting rod and sequentially arranged along the axis of the adjusting rod, and spring inserting and pulling pins matched with the fish-line grooves are formed in the side wall of the base rod.

7. The knee joint fixing support frame according to claim 4, wherein the top end of the adjusting rod is detachably connected with the support rod through a hoop.

8. The knee joint fixation brace of claim 1, wherein the knee joint splint comprises:

the outer wall of the popliteal pad rod comprises a concave surface, and the popliteal pad rod is sleeved on the supporting rod in a sliding way and locked by a screw;

the first vertical rod and the second vertical rod are respectively arranged at two ends of the popliteal pad rod;

one end of the upper pressure plate is detachably connected with the first upright stanchion, the other end of the upper pressure plate is detachably connected with the second upright stanchion, and the upper pressure plate comprises a first guide groove and a second guide groove which are oppositely arranged;

the first pressing block is positioned below the upper pressing plate, can slide along the first guide groove through the first connecting column and is locked through the first nut;

and the second pressing block is positioned below the upper pressing plate, can slide along the second guide groove through a second connecting column and is locked through a second nut.

9. The knee joint fixing support frame according to claim 8, wherein a first clamping groove and a second clamping groove are respectively arranged at two ends of the upper pressure plate;

a plurality of bosses are sequentially arranged on the outer wall of the first vertical rod along the axis of the first vertical rod, and the first clamping groove is clamped between two adjacent bosses;

the second vertical rod penetrates through the second clamping groove, and a third nut used for locking the upper pressing plate is arranged on the second vertical rod.

10. The knee fixation support of claim 9, wherein said second leg is hinged to said popliteal bolster.