CN114053084A

CN114053084A - Adjustable shin bone intramedullary nail position ware of bending knees

Info

Publication number: CN114053084A
Application number: CN202111359703.XA
Authority: CN
Inventors: 王青华; 陈昌红; 陈姚飞
Original assignee: Jiangyin Hospital Of Traditional Chinese Medicine
Current assignee: Jiangyin Hospital Of Traditional Chinese Medicine
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-02-18

Abstract

The invention discloses an adjustable knee bending posture device for a tibial intramedullary nail, which comprises a bed body and a knee bending structure, wherein the bed body comprises a first direction along a long edge and a second direction vertical to the first direction; the knee bending structure is detachably connected with the bed body through a rotating structure and comprises a supporting structure, a fixing plate, a longitudinal adjusting structure, a transverse adjusting structure, a leg placing structure and a foot placing structure, and the supporting structure is located below the fixing plate and is movably connected with the fixing plate; the longitudinal adjusting structure is positioned above the fixing plate, one end of the longitudinal adjusting structure is fixedly connected with the fixing plate, and the other end of the longitudinal adjusting structure is fixedly connected with the leg placing structure; the transverse adjusting structure is located above the fixing plate, one end of the transverse adjusting structure is movably connected with the fixing plate, the other end of the transverse adjusting structure is fixedly connected with the foot placing structure, and the transverse adjusting structure can move on the fixing plate along a first direction.

Description

Adjustable shin bone intramedullary nail position ware of bending knees

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an adjustable knee bending posture device of a tibial intramedullary nail.

Background

The tibia fracture is the most likely fracture in the human body fracture, the more common fracture, the most common method for treating the tibia fracture is open reduction internal fixation, and the method mainly comprises the steps of cutting soft tissues such as skin and muscle of an affected part to expose bones, and performing operations of fracture reduction and dislocation under direct vision. When the fracture is reduced, the internal fixing device is arranged in the body of the patient to fix the fracture end.

The slotting position of the open reduction internal fixation operation must be correct, and the tibial tubercle is easy to split when the slotting position is deviated from the front: the slotting position is inclined and the fracture position is higher, the cortex of one side is easy to be split, two rectangular nails are preferably simultaneously driven or two sides are alternately driven when the rectangular nails are driven, two nails are not crossed in the medullary cavity, otherwise, the insertion is difficult, the position placing position of a patient is particularly critical when the slotting is carried out, and the position placing of the patient in the operation is not correct, so that the guide pin of the intramedullary nail of the tibia is difficult to place.

Aiming at the problems, the invention provides an adjustable knee bending posture device of a tibial intramedullary nail.

Disclosure of Invention

In order to overcome the problems in the background art, the invention provides an adjustable shin bone intramedullary nail knee bending posture device.

An adjustable shin bone intramedullary nail knee bending posture device comprises a bed body and a knee bending structure, wherein the bed body comprises a first direction along a long edge and a second direction perpendicular to the first direction; the knee bending structure is detachably connected with the bed body through a rotating structure and comprises a supporting structure, a fixing plate, a longitudinal adjusting structure, a transverse adjusting structure, a leg placing structure and a foot placing structure, and the supporting structure is located below the fixing plate and is movably connected with the fixing plate; the longitudinal adjusting structure is positioned above the fixing plate, one end of the longitudinal adjusting structure is fixedly connected with the fixing plate, and the other end of the longitudinal adjusting structure is fixedly connected with the leg placing structure; the transverse adjusting structure is located above the fixing plate, one end of the transverse adjusting structure is movably connected with the fixing plate, the other end of the transverse adjusting structure is fixedly connected with the foot placing structure, and the transverse adjusting structure can move on the fixing plate along a first direction. Through the cooperation regulation of horizontal regulation structure and vertical regulation structure, make the position ware of bending knee can adjust different position according to different patients to help the patient to put the exact position.

Further, the longitudinal adjusting structure comprises a first adjusting rod and a second adjusting rod, the first adjusting rod and the second adjusting rod are both arranged on the upper end face of the fixing plate, and the first adjusting rod and the second adjusting rod are symmetrical; the leg placing structure is arranged at the upper ends of the first adjusting rod and the second adjusting rod.

Further, the first adjusting rod comprises a first hollow sleeve, a second hollow sleeve and a first screw rod, the second hollow sleeve is positioned inside the first hollow sleeve, the outer wall of the second hollow sleeve is tightly contacted with the inner wall of the first hollow sleeve, the first hollow sleeve and the second hollow sleeve both comprise at least four first through holes, first internal threads are arranged inside the first through holes and are matched with the threads on the first screw rod, the first screw rod is inserted into the first through holes, the second adjusting rod comprises a third hollow sleeve, a fourth hollow sleeve and a second screw rod, the four hollow sleeves are positioned inside the third hollow sleeve, the four outer walls of the fourth hollow sleeves are tightly contacted with the three inner walls of the third hollow sleeve, the third hollow sleeve and the fourth hollow sleeve both comprise at least four second through holes, the inner parts of the second through holes comprise second internal threads, and the second internal threads are matched with the threads on the second screw rod, the second screw rod is inserted into the second through hole. Install screw rod one after medical personnel have adjusted the height inside first through-hole, screw rod one runs through hollow sleeve pipe one and hollow sleeve pipe two, installs screw rod two inside the second through-hole, screw rod two runs through hollow sleeve pipe three and hollow sleeve pipe four to the height of fixed second regulation pole.

Furthermore, the first screw and the second screw are both L-shaped screws, and the L-shaped screws are convenient for medical staff to adjust the first screw and the second screw.

Further, the transverse adjusting structure comprises an expansion rod, the expansion rod comprises a first part and a second part, the first part is located inside the second part and movably connected with the second part through a limiting structure, the second part comprises a first end and a second end, the first end is fixedly connected with the fixing plate, and the second end is movably connected with the first part. Medical personnel can adjust the telescopic link according to patient's actual conditions, adjusts to and fixes first portion and second portion through limit structure after required length.

Further, the lateral adjustment structure includes a movement adjustment structure that moves in a second direction.

Further, the movable adjusting structure comprises a sliding block and a guide rail, the guide rail is arranged on the fixed plate and fixedly connected with the fixed plate, the sliding block is connected with the guide rail in a sliding mode, the sliding block is connected with the first end in an integrated mode, and the transverse adjusting structure can move left and right through the matching of the sliding block and the guide rail.

Further, the sliding block comprises a circular through hole and a third screw rod, the third screw rod is in threaded connection with the circular through hole, and the third screw rod is matched with the circular through hole to be used, so that the sliding block and the guide rail are completely fixed.

Further, the second part includes spacing hole, spacing hole site in the second end, limit structure and spacing hole swing joint make things convenient for medical personnel to operate limit structure to fix the length of telescopic link.

Further, limit structure includes pivot one, eccentric connecting rod and blocks the piece, pivot one is located spacing downthehole portion, with second portion fixed connection, eccentric connecting rod is located pivot one is last, with a rotation connection in the pivot, block the piece and be located eccentric connecting rod below, with spacing hole swing joint, eccentric connecting rod can be through rotating to block the piece and fix between first portion and second portion to fix the telescopic link through blocking the piece.

Furthermore, the first part comprises a rectangular groove, the rectangular groove is positioned on the side face of the first part, the stop block is positioned in the rectangular groove, the stop block can move in the rectangular groove, the first part can only move in the horizontal direction through the matching of the stop block and the rectangular groove, and the first part and the second part are prevented from rotating relatively.

Further, the stop block includes dead lever one, dead lever two and barrier plate, dead lever one and dead lever two are located barrier plate both ends, all with barrier plate body coupling, the second part includes the circular recess, the circular recess is located second end is inboard, dead lever one and dead lever two are located inside the circular recess, with circular recess swing joint, medical personnel make barrier plate and first part in close contact with through rotating eccentric connecting rod to fix the first part, rotate eccentric connecting rod once more and make the barrier plate not hard up, thereby adjust the length of first part.

Further, eccentric connecting rod includes eccentric wheel and connecting rod, eccentric wheel and connecting rod body coupling, the connecting rod is the arcuation connecting rod, the arcuation connecting rod makes things convenient for medical personnel to operate eccentric connecting rod.

Further, foot placement structure includes standing groove and fixed band, fixed band one end and standing groove fixed connection, the other end is pasted through the magic and can be dismantled with the standing groove and be connected, and this kind of setting makes things convenient for medical personnel to fix patient's foot.

Further, bearing structure includes the supporting leg, fixed plate one end passes through rotating-structure swing joint with the bed body, and fixed plate other end below sets up the supporting leg, the supporting leg passes through fixed knot with the fixed plate and constructs the rotation and be connected to the stability of reinforcing fixed plate.

Further, fixed knot constructs including pivot two and fixed slot, pivot two are located inside the fixed slot, with fixed slot fixed connection, the supporting leg includes through-hole one, pivot two runs through-hole one, with a through-hole one rotation connection.

Furthermore, the fixed slot includes protruding first and protruding second, protruding first and protruding second sets up respectively on the fixed slot both sides inside wall, with fixed slot body coupling, protruding first and protruding two edge parts are streamlined, can make the supporting leg take place to rotate under the effect of the power when preventing the supporting leg removal.

Furthermore, revolution mechanic includes the hinge, the hinge includes first hinge and second hinge, first hinge passes through first nut fixed connection with the fixed plate, the second hinge passes through second nut fixed connection with the bed body, first hinge is articulated with the second hinge.

Furthermore, the bed body includes the locking structure, the locking structure is located bed body below, with bed body fixed connection, the fixed plate includes the rectangle through-hole, the rectangle through-hole can use with the locking structure cooperation to make the structure of bending the knee can accomodate in bed body below.

Further, the locking structure comprises a threaded rod and a locking groove, the threaded rod is in threaded connection with the locking groove, the threaded rod comprises a diamond block, the diamond block is integrally connected with the threaded rod, the width of the diamond block is smaller than that of the rectangular through hole, and the length of the diamond block is smaller than that of the rectangular through hole and larger than that of the rectangular through hole.

Further, the shank placement structure comprises a supporting rod, the lower end of the supporting rod is fixedly connected with the longitudinal adjusting structure, and the upper end of the supporting rod is provided with a soft material, so that the comfort level of a patient is improved.

The invention has the beneficial effects that: compared with the existing adjustable shin bone intramedullary nail knee bending position device, the technical scheme of the invention has the advantages that the knee bending structure which can be detachably connected with the bed body and the adjusting structure which can adjust the transverse position and the longitudinal position are arranged, so that the knee bending position device can accurately assist a patient to put the position, and the knee bending structure can be folded and unfolded below the bed body and movably connected with the bed body when the knee bending structure is not needed, thereby saving the space.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the assembly structure of the present invention;

FIG. 3 is a schematic view of the connection between the knee bending structure and the bed body according to the present invention;

FIG. 4 is a schematic view of a knee bending structure according to the present invention;

FIG. 5 is a schematic view of the longitudinal adjustment structure of the present invention;

FIG. 6 is a schematic view of a fixing plate according to the present invention;

FIG. 7 is a schematic view of the lateral adjustment structure of the present invention;

FIG. 8 is a schematic view of a first portion of the present invention;

FIG. 9 is a schematic view of a barrier plate according to the present invention;

FIG. 10 is a schematic view of a lateral adjustment feature of the present invention;

FIG. 11 is a schematic view of an eccentric link according to the present invention;

FIG. 12 is a schematic view of a support structure according to the present invention;

FIG. 13 is a detailed view of the support structure of the present invention;

FIG. 14 is a schematic structural diagram of the bed of the present invention;

in the figure, 1, bed body; 11. a threaded rod; 12. a locking groove; 13. diamond-shaped blocks; 2. a leg placement structure; 3. a longitudinal adjustment structure; 31. a first hollow sleeve; 32. a second hollow sleeve; 33. a first through hole; 34. a first screw rod; 4. a lateral adjustment structure; 41. a first portion; 42. a second portion; 43. a rectangular groove; 44. an eccentric link; 45. fixing a rod I; 46. a second fixing rod; 47. a blocking plate; 48. a slider; 49. a limiting hole; 5. a foot placement structure; 51. a placement groove; 52. fixing belts; 6. a fixing plate; 61. a rectangular through hole; 62. a first hinge; 63. a second hinge; 64. a guide rail; 65. a third screw; 7. supporting legs; 71. fixing grooves; 72. a first bulge; 73. and a second rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-3, the adjustable tibial intramedullary nail knee bending posture device in the present embodiment includes a bed 1 and a knee bending structure, wherein the bed 1 includes a first direction along a long side and a second direction perpendicular to the first direction; the knee bending structure is detachably connected with the bed body 1 through a rotating structure, the knee bending structure comprises a supporting structure, a fixing plate 6, a longitudinal adjusting structure 3, a transverse adjusting structure 4, a leg placing structure 2 and a foot placing structure 5, and the supporting structure is positioned below the fixing plate 6 and is movably connected with the fixing plate 6; the longitudinal adjusting structure 3 is positioned above the fixing plate 6, one end of the longitudinal adjusting structure is fixedly connected with the fixing plate 6, and the other end of the longitudinal adjusting structure is fixedly connected with the leg placing structure 2; horizontal regulation structure 4 is located fixed plate 6 top, and horizontal regulation structure 4's one end and fixed plate 6 swing joint, the other end and foot place structure 5 fixed connection, and horizontal regulation structure 4 can move along first direction on fixed plate 6. Through the cooperation regulation of horizontal regulation structure 4 and vertical regulation structure 3, make the position ware of bending knee can adjust different position according to different patients to help the patient to put the exact position.

Example 2

As shown in fig. 4 to 5, on the basis of embodiment 1, the following specific settings are made in this embodiment: the longitudinal adjusting structure 3 comprises a first adjusting rod and a second adjusting rod, the first adjusting rod and the second adjusting rod are both arranged on the upper end surface of the fixing plate 6, and the first adjusting rod and the second adjusting rod are symmetrical; the leg placing structure 2 is arranged at the upper ends of the first adjusting rod and the second adjusting rod. The first adjusting rod comprises a first hollow sleeve 31, a second hollow sleeve 32 and a first screw 34, the second hollow sleeve 32 is positioned inside the first hollow sleeve 31, the outer wall of the second hollow sleeve 32 is tightly contacted with the inner wall of the first hollow sleeve 31, the first hollow sleeve 31 and the second hollow sleeve 32 both comprise at least four first through holes 33, first internal threads are arranged inside the first through holes 33 and are matched with threads on the first screw 34, the first screw 34 is inserted into the first through holes 33, the second adjusting rod comprises a third hollow sleeve, the hollow sleeve is located inside the hollow sleeve, the outer wall of the hollow sleeve is in close contact with the inner wall of the hollow sleeve, the hollow sleeve is provided with at least four second through holes, the inner portion of each second through hole comprises a second internal thread, the second internal threads are matched with the threads on the screw rod II, and the screw rod II is inserted into the second through holes. After the height of the medical staff is adjusted, the first screw 34 is installed inside the first through hole 33, the first screw 34 penetrates through the first hollow sleeve 31 and the second hollow sleeve 32, the second screw is installed inside the second through hole, and the second screw penetrates through the third hollow sleeve and the fourth hollow sleeve, so that the height of the second adjusting rod is fixed. The first screw 34 and the second screw are both L-shaped screws, and the L-shaped screws are convenient for medical staff to adjust the first screw 34 and the second screw.

The leg placing structure 2 comprises a supporting rod, the lower end of the supporting rod is fixedly connected with the longitudinal adjusting structure 3, and the upper end of the supporting rod is provided with a soft material, so that the comfort degree of a patient is increased.

Example 3

As shown in fig. 6 to 11, on the basis of embodiment 1, the present embodiment performs the following specific settings: the transverse adjusting structure 4 comprises an expansion rod, the expansion rod comprises a first part 41 and a second part 42, the first part 41 is located inside the second part 42 and movably connected with the second part 42 through a limiting structure, the second part 42 comprises a first end and a second end, the first end is fixedly connected with the fixing plate 6, and the second end is movably connected with the first part 41. Medical personnel can adjust the telescopic link according to patient actual conditions, adjust to and fix first portion 41 and second portion 42 through limit structure after required length. The lateral adjustment structure 4 comprises a movement adjustment structure that moves in a second direction. The movement adjusting structure comprises a sliding block 48 and a guide rail 64, the guide rail 64 is arranged on the fixed plate 6, the guide rail 64 is fixedly connected with the fixed plate 6, the sliding block 48 is in sliding connection with the guide rail 64, the sliding block 48 is integrally connected with the first end, and the transverse adjusting structure 4 can move left and right through the matching of the sliding block 48 and the guide rail 64. The sliding block 48 comprises a circular through hole and a third screw rod 65, the third screw rod 65 is in threaded connection with the circular through hole, and the third screw rod 65 is matched with the circular through hole for use, so that the sliding block 48 and the guide rail 64 are completely fixed.

Second portion 42 includes spacing hole 49, and spacing hole 49 is located the second end, and limit structure and spacing hole 49 swing joint make things convenient for medical personnel to operate limit structure to fix the length of telescopic link. The limiting structure comprises a first rotating shaft, an eccentric connecting rod 44 and a blocking block, wherein the first rotating shaft is located in a limiting hole 49 and fixedly connected with the second portion 42, the eccentric connecting rod 44 is located on the first rotating shaft and rotatably connected with the first rotating shaft, the blocking block is located below the eccentric connecting rod 44 and movably connected with the limiting hole 49, and the eccentric connecting rod 44 can fix the blocking block between the first portion 41 and the second portion 42 through rotation, so that the telescopic rod is fixed through the blocking block. The first part 41 comprises a rectangular slot 43, the rectangular slot 43 is arranged on the side surface of the first part 41, the stop block is arranged in the rectangular slot 43, the stop block can move in the rectangular slot 43, the first part 41 can only move in the horizontal direction through the cooperation of the stop block and the rectangular slot 43, and the first part 41 and the second part 42 are prevented from rotating relatively. The stopper includes dead lever 45, dead lever two 46 and barrier plate 47, dead lever 45 and dead lever two 46 are located barrier plate 47 both ends, all with barrier plate 47 body coupling, second part 42 includes the circular recess, the circular recess is located second end inboard, dead lever 45 and dead lever two 46 are located inside the circular recess, with circular recess swing joint, medical personnel make barrier plate 47 and first part 41 in close contact with through rotating eccentric connecting rod 44, thereby fix first part 41, rotate eccentric connecting rod 44 once more and make barrier plate 47 not hard up, thereby adjust the length of first part 41. The eccentric connecting rod 44 includes an eccentric wheel and a connecting rod, the eccentric wheel and the connecting rod are integrally connected, the connecting rod is an arc-shaped connecting rod, and the arc-shaped connecting rod is convenient for medical staff to operate the eccentric connecting rod 44.

Foot placement structure 5 includes standing groove 51 and fixed band 52, and fixed band 52 one end and standing groove 51 fixed connection, the other end passes through the magic and pastes and can dismantle with standing groove 51 and be connected, and this kind of setting makes things convenient for medical personnel to fix patient's foot.

Example 4

As shown in fig. 12 to 14, on the basis of embodiment 1, the present embodiment performs the following specific settings: the bearing structure includes supporting

leg

7, and 6 one ends of fixed plate and the bed body 1 set up supporting leg 7 through rotating-structure swing joint, and 6 other ends below of fixed plate, supporting leg 7 and fixed plate 6 rotate through fixed knot to be connected to reinforcing fixed plate 6's stability. The fixing structure comprises a second rotating shaft 73 and a fixing groove 71, the second rotating shaft 73 is located inside the fixing groove 71 and fixedly connected with the fixing groove 71, the supporting leg 7 comprises a first through hole, and the second rotating shaft 73 penetrates through the first through hole and is rotatably connected with the first through hole. The fixing groove 71 comprises a first protrusion 72 and a second protrusion, the first protrusion 72 and the second protrusion are respectively arranged on the inner side walls of the two sides of the fixing groove 71 and are integrally connected with the fixing groove 71, and the edge parts of the first protrusion 72 and the second protrusion are streamline, so that the supporting leg 7 can be prevented from rotating under the action of force while the supporting leg 7 is prevented from moving.

The rotating structure comprises hinges, the hinges comprise a first hinge 62 and a second hinge 63, the first hinge 62 is fixedly connected with the fixing plate 6 through a first nut, the second hinge 63 is fixedly connected with the bed body 1 through a second nut, and the first hinge 62 is hinged with the second hinge 63. The bed body 1 comprises a locking structure, the locking structure is positioned below the bed body 1 and is fixedly connected with the bed body 1, the fixing plate 6 comprises a rectangular through hole 61, and the rectangular through hole 61 can be matched with the locking structure for use, so that the knee bending structure can be accommodated below the bed body 1. The locking structure comprises a threaded rod 11 and a locking groove 12, the threaded rod 11 is in threaded connection with the locking groove 12, the threaded rod 11 comprises a diamond block 13, the diamond block 13 is integrally connected with the threaded rod 11, the width of the diamond block 13 is smaller than that of a rectangular through hole 61, and the length of the diamond block 13 is smaller than that of the rectangular through hole 61 and is larger than that of the rectangular through hole 61.

The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.

Claims

1. An adjustable shin bone intramedullary nail knee bending posture device comprises a bed body and a knee bending structure, and is characterized in that the bed body comprises a first direction along a long edge and a second direction perpendicular to the first direction; the knee bending structure is detachably connected with the bed body through a rotating structure and comprises a supporting structure, a fixing plate, a longitudinal adjusting structure, a transverse adjusting structure, a leg placing structure and a foot placing structure, and the supporting structure is located below the fixing plate and is movably connected with the fixing plate; the longitudinal adjusting structure is positioned above the fixing plate, one end of the longitudinal adjusting structure is fixedly connected with the fixing plate, and the other end of the longitudinal adjusting structure is fixedly connected with the leg placing structure; the transverse adjusting structure is positioned above the fixed plate, one end of the transverse adjusting structure is movably connected with the fixed plate, the other end of the transverse adjusting structure is fixedly connected with the foot placing structure, the transverse adjusting structure can move on the fixed plate along a first direction, the longitudinal adjusting structure comprises a first adjusting rod and a second adjusting rod, the first adjusting rod and the second adjusting rod are both arranged on the upper end face of the fixed plate, and the first adjusting rod and the second adjusting rod are symmetrical; the leg placing structure is arranged at the upper ends of the first adjusting rod and the second adjusting rod.

2. The adjustable shin bone intramedullary nail knee bending posture device according to claim 1, wherein the first adjusting rod comprises a first hollow sleeve, a second hollow sleeve and a first screw rod, the second hollow sleeve is positioned inside the first hollow sleeve, the outer wall of the second hollow sleeve is tightly contacted with the inner wall of the first hollow sleeve, the first hollow sleeve and the second hollow sleeve each comprise at least four first through holes, the first through holes internally comprise first internal threads which are matched with the threads on the first screw rod, the first screw rod is inserted into the first through holes, the second adjusting rod comprises a third hollow sleeve, a fourth hollow sleeve and a second screw rod, the fourth hollow sleeve is positioned inside the third hollow sleeve, the outer wall of the fourth hollow sleeve is tightly contacted with the inner wall of the third hollow sleeve, and the third hollow sleeve and the fourth hollow sleeve each comprise at least four second through holes, the second through hole comprises a second internal thread, the second internal thread is matched with the thread on the second screw rod, and the second screw rod is inserted into the second through hole.

3. The adjustable tibial intramedullary nail knee flexion positioner of claim 2, wherein the lateral adjustment structure comprises a telescoping rod, the telescoping rod comprising a first portion and a second portion, the first portion being located within the second portion and being movably connected to the second portion by a stop structure, the second portion comprising a first end and a second end, the first end being fixedly connected to the fixation plate and the second end being movably connected to the first portion.

4. The adjustable tibial intramedullary nail knee flexion positioner of claim 3, wherein the second portion includes a stop hole at the second end, the stop structure being movably connected to the stop hole.

5. The adjustable shin bone intramedullary nail knee bending posture device according to claim 4, wherein the limiting structure comprises a first rotating shaft, an eccentric connecting rod and a blocking block, the first rotating shaft is located inside the limiting hole and fixedly connected with the second part, the eccentric connecting rod is located on the first rotating shaft and rotatably connected with the first rotating shaft, the blocking block is located below the eccentric connecting rod and movably connected with the limiting hole, and the eccentric connecting rod can fix the blocking block between the first part and the second part through rotation, so that the telescopic rod is fixed through the blocking block.

6. The adjustable tibial intramedullary nail knee flexion postural device of any one of claims 3 to 5, wherein said first portion comprises a rectangular slot flanked by said first portion, said blocking block being located within said rectangular slot, the blocking block being movable within the rectangular slot.

7. The adjustable tibial intramedullary nail knee bending posture device according to claim 6, wherein the blocking block comprises a first fixing rod, a second fixing rod and a blocking plate, the first fixing rod and the second fixing rod are located at two ends of the blocking plate and are integrally connected with the blocking plate, the second portion comprises a circular groove, the circular groove is located on the inner side of the second end, and the first fixing rod and the second fixing rod are located inside the circular groove and are movably connected with the circular groove.

8. The adjustable tibial intramedullary nail knee flexion positioner according to claim 7, wherein the eccentric link comprises an eccentric wheel and a connecting rod, the eccentric wheel being integrally connected with the connecting rod, the connecting rod being an arc-shaped link.

9. The adjustable tibial intramedullary nail knee bending posture device according to any one of claims 7 to 8, wherein the rotating structure comprises a hinge, the hinge comprises a first hinge and a second hinge, the first hinge is fixedly connected with the fixing plate through a first nut, the second hinge is fixedly connected with the bed body through a second nut, and the first hinge is hinged with the second hinge.

10. The adjustable knee bending posture device for tibial intramedullary nails of claim 9, wherein the bed body comprises a locking structure, the locking structure is located below the bed body and is fixedly connected with the bed body, the fixing plate comprises a rectangular through hole, the rectangular through hole can be matched with the locking structure for use, the locking structure comprises a threaded rod and a locking groove, the threaded rod is in threaded connection with the locking groove, the threaded rod comprises a diamond block, the diamond block is integrally connected with the threaded rod, the width of the diamond block is smaller than that of the rectangular through hole, and the length of the diamond block is smaller than that of the rectangular through hole and larger than that of the rectangular through hole.