CN107184261B - Femur resetting and correcting device - Google Patents
Femur resetting and correcting device Download PDFInfo
- Publication number
- CN107184261B CN107184261B CN201710537677.2A CN201710537677A CN107184261B CN 107184261 B CN107184261 B CN 107184261B CN 201710537677 A CN201710537677 A CN 201710537677A CN 107184261 B CN107184261 B CN 107184261B
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- plate
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- 210000000689 upper leg Anatomy 0.000 title claims abstract description 136
- 238000001727 in vivo Methods 0.000 claims description 19
- 230000013011 mating Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000035876 healing Effects 0.000 abstract description 5
- 238000000338 in vitro Methods 0.000 description 7
- 208000010392 Bone Fractures Diseases 0.000 description 5
- 206010017076 Fracture Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000006735 Periostitis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000000501 femur body Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008338 local blood flow Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 210000003460 periosteum Anatomy 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8866—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices for gripping or pushing bones, e.g. approximators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Abstract
The invention discloses a femoral reduction and correction device, which comprises an internal fixing needle, an external connecting plate and a fixing piece, wherein the internal fixing needle is fixedly connected with a femur, the external connecting plate is used for arranging the internal fixing needle, at least one internal fixing needle is used for respectively connecting an upper femur section and a lower femur section, and the internal fixing needle can be adjusted through the fixing piece and can be fixed on the external connecting plate. When the femoral head is used, at least one internal fixing needle is fixedly connected to the upper femur section and the lower femur section respectively, the position of the internal fixing needle is adjusted to drive the position of the upper femur section or the lower femur section to change, so that the upper femur section and the lower femur section are aligned, and then the internal fixing needle is fixed on an external connecting plate through a fixing piece, so that femoral head resetting is realized; in the later stage of the reduction, the reduction condition of the femur is observed through X-rays, when the upper femur and the lower femur have deviation, the positions of the upper femur and the lower femur are adjusted through adjusting the relative positions of the internal fixing needles, so that the upper femur and the lower femur are completely aligned, the reduction of the femur is corrected, and the healing of the femur deformity is avoided.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a femoral reduction and correction device.
Background
The femur is the longest tubular bone in the human body, and the femur shaft is fractured under the action of strong force such as automobile impact, heavy object crushing or rolling or falling from a high place.
When the femoral shaft is fractured, the existing operation treatment mainly comprises intramedullary nail fixation and bone plate screw fixation.
The intramedullary nail is usually used for 1/3 or 1/3 of the upper bone fracture on the femur, the fixing method adopts a minimally invasive technology, only a small incision is formed at the puncture needle, the damage is small, the bleeding is less, the blood supply at the fracture end is not damaged, and the fracture healing is facilitated. However, the reset result cannot be finely adjusted in the later fixing stage, so that the reset effect cannot be controlled.
Bone plate screw fixation is generally suitable for 1/3 or middle-lower 1/3 fractures in the femur, and the fixation method needs large-area incision and reduction, soft tissues and periosteum are peeled off, blood circulation is destroyed, so that a dead zone is enlarged, healing time is delayed, femur reduction cannot be corrected in the later stage, and if reduction dislocation occurs, the hidden danger of deformity or shortening of the length of lower limbs exists.
In summary, how to provide a femoral reduction and correction device capable of achieving minimally invasive reduction and performing fine adjustment correction at the later stage of reduction is a problem to be solved by those skilled in the art.
Disclosure of Invention
Therefore, the invention aims to provide a femur resetting and correcting device which adopts a minimally invasive resetting technology to achieve the effect of resetting the femur, and can perform fine adjustment correction on the femur in the later period of resetting so as to achieve optimal resetting.
In order to achieve the above object, the present invention provides the following technical solutions:
a femoral reduction and correction apparatus comprising:
the internal fixing needle is used for being fixedly connected with the femur, and the internal fixing needle used for being connected with the upper femur section and the internal fixing needle connected with the lower femur section are at least one;
the in-vitro connecting plate is used for setting the in-vivo fixing needle, and the in-vivo fixing needle is adjustable through a fixing piece and can be fixedly connected with the in-vitro connecting plate.
Preferably, one end of the internal fixation needle is provided with external threads for mating connection with the threaded bore of the femur.
Preferably, the number of the internal fixing needles used for connecting the upper femur is at least two, the number of the internal fixing needles used for connecting the lower femur is at least two, and the connecting points of all the internal fixing needles and the external connecting plate are positioned in the same straight line.
Preferably, the fixing piece comprises a clamping block and a fixing plate which is adjustably and fixedly arranged on the external connecting plate, and the clamping block is used for clamping the internal fixing needle in a matched mode with the fixing plate.
Preferably, the fixing plate includes a first fixing plate fixedly mounted at one end of the external connection plate and a second fixing plate movably and fixedly mounted on the external connection plate.
Preferably, the external connecting plate is provided with a mounting channel, and the second fixing plate is movably arranged on the mounting channel; the second fixing plate is provided with a connecting hole, and the second fixing plate is fixed on the external connecting plate through bolts penetrating through the mounting channel and the connecting hole and first nuts matched with the bolts.
Preferably, the clamping block is provided with a V-shaped groove or a C-shaped groove for clamping the internal fixation needle.
Preferably, the clamping block is provided with a threaded rod, and the clamping block is fixed on the fixing plate through the threaded rod and a second nut matched with the threaded rod.
Preferably, the fixing plate is provided with a threaded hole, and a locking bolt for preventing the clamping block from loosening is screwed in the threaded hole.
Preferably, the surface of the fixing plate is carved with scales for conveniently and clearly indicating the angle of adjustment of the in-vivo fixing needle.
The invention provides a femoral reduction and correction device, which comprises an internal fixing needle, an external connecting plate and a fixing piece, wherein the internal fixing needle is fixedly connected with a femur, the external connecting plate is used for arranging the internal fixing needle, the internal fixing needle is used for respectively connecting an upper femur section and a lower femur section, and the internal fixing needle can be adjusted through the fixing piece and can be fixed on the external connecting plate.
By adopting the structure, when the femoral head is used, at least one internal fixing needle is fixedly connected with the upper femur section and the lower femur section respectively, the position of the internal fixing needle is adjusted to drive the position of the upper femur section or the lower femur section to change, so that the upper femur section and the lower femur section are aligned, and then the internal fixing needle is fixed on an external connecting plate through a fixing piece, so that femoral head resetting is realized; in the later stage of resetting, the resetting condition of the femur is observed through X-ray, when the butt joint resetting of the upper femur and the lower femur is found to have deviation, the positions of the upper femur and the lower femur can be adjusted by adjusting the relative positions of the internal fixing needles, so that the upper femur and the lower femur are completely aligned, the effect of correcting the resetting of the femur is achieved, and the abnormal healing of the femur is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of an embodiment of a femoral reduction and correction apparatus provided by the present invention;
FIG. 2 is a top view of a particular embodiment of a femoral reduction and correction apparatus provided in the present invention;
FIG. 3 is a schematic view of the structure of an internal fixation needle in an embodiment of the femoral reduction and correction apparatus provided by the present invention;
FIG. 4 is a schematic view of the structure of the external connection plate in the embodiment of the femoral reduction and correction device according to the present invention;
FIG. 5 is a schematic view of the structure of a locking block in an embodiment of the femoral reduction and correction device provided by the present invention;
FIG. 6 is a schematic view of a clamp body internal fixation needle in an embodiment of a femoral reduction and correction device provided by the present invention;
FIG. 7 is a schematic view of a locking bolt locking clamp block in an embodiment of a femoral reduction and correction device according to the present invention;
fig. 8 is a top view of a fixation plate in an embodiment of a femoral reduction and correction device provided by the present invention.
In fig. 1-8:
1 is femur, 2 is internal fixation needle, 3 is external connection board, 4 is fixed plate, 5 is clamping block, 6 is bolt, 7 is first nut, 8 is second nut, 9 is locking bolt, 11 is femur upper segment, 12 is femur lower segment, 21 is external thread, 31 is mounting channel, 41 is scale, 51 is V type groove, 52 is threaded rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims at providing a femur resetting and correcting device which adopts a minimally invasive resetting technology to achieve the effect of resetting the femur, and can perform fine adjustment correction on the femur in the later period of resetting so as to achieve optimal resetting.
Referring to fig. 1 to 8, fig. 1 to 8 are diagrams illustrating an embodiment of a femoral reduction and correction device according to the present invention.
The invention provides a femoral reduction and correction device which comprises an internal fixing needle 2 and an external connecting plate 3, wherein the internal fixing needle 2 is fixedly connected with a femur 1, the external connecting plate 3 is used for arranging the internal fixing needle 2, at least one internal fixing needle 2 is used for connecting an upper femur section 11 and at least one internal fixing needle 2 is connected with a lower femur section 12, and the internal fixing needle 2 can be adjusted through a fixing piece and can be fixedly connected with the external connecting plate 3.
In particular, the internal fixation needle 2 is used for minimally invasive treatment of fracture of femur 1, and the incision of the minimally invasive technique is smaller to minimize the damage of local blood circulation of the fracture. The internal fixation needle 2 is used for being inserted into the femur 1 through a minimally invasive incision and is fixedly connected with the femur 1 so as to fix and adjust the position of the femur 1 through the internal fixation needle 2.
When the internal fixation needle 2 is used, the internal fixation needle 2 is respectively inserted into the upper femur section 11 and the lower femur section 12, the number of internal fixation needles 2 which are used for being inserted into the upper femur section 11 and fixedly connected with the upper femur section 11 is at least one, the number of internal fixation needles 2 which are used for being inserted into the lower femur section 12 and fixedly connected with the lower femur section 12 is also at least one, the internal fixation needle 2 which is used for being connected with the upper femur section 11 can drive the position change of the upper femur section 11, and the internal fixation needle 2 which is used for being connected with the lower femur section 12 can drive the position change of the lower femur section 12.
The part of the internal fixation needle 2 located outside the body is arranged on the external connection plate 3, and the internal fixation needle 2 can be adjusted by a fixing piece and can be fixed on the external connection plate 3, namely, the position of the internal fixation needle 2 on the external connection plate 3 is adjustable, and when the position of the internal fixation needle 2 is determined, the internal fixation needle 2 can be fixed on the external connection plate 3 by the fixing piece.
In summary, with such a structure, when in use, at least one internal fixation needle 2 is fixedly connected to the upper femur segment 11 and the lower femur segment 12, the positions of the upper femur segment 11 or the lower femur segment 12 can be adjusted by adjusting the positions of the internal fixation needles 2 fixed to the upper femur segment 11 or the lower femur segment 12, so that the upper femur segment 11 and the lower femur segment 12 are completely abutted, and then the internal fixation needles 2 are fixed to the external connecting plate 3 through the fixing piece, so that the positions of the femur 1 can be fixed, and the positions of the abutted upper femur segment 11 and the abutted lower femur segment 12 are unchanged, so as to realize the reduction of the femur 1.
In addition, in the later stage of the reduction of the femur 1, the reduction condition of the femur 1 is observed through X-rays, when the deviation exists in the butt joint reduction of the upper femur section 11 and the lower femur section 12, the position of the upper femur section 11 or the lower femur section 12 can be adjusted by adjusting the relative position of the internal fixing needle 2, so that the upper and lower sections of the femur 1 are completely aligned, the effect of correcting the reduction of the femur 1 is achieved, and the abnormal healing of the femur 1 is avoided.
In view of the simple and easy implementation of the fixed connection of the internal fixation needle 2 to the femur 1, in a specific embodiment, one end of the internal fixation needle 2 is provided with external threads 21 for mating connection with the threaded bore of the femur 1. Namely, a threaded hole is formed in the femur 1 through a minimally invasive technology, and when the internal fixation needle is used, the external thread 21 of the internal fixation needle 2 is screwed into the threaded hole of the femur 1, so that the internal fixation needle 2 is fixedly connected with the femur 1.
In order to ensure the stability of the positions of the upper femur 11 and the lower femur 12, in one embodiment, there are at least two internal fixation pins 2 for connecting the upper femur 11 and at least two internal fixation pins 2 for connecting the lower femur 12. The position of the upper femur 11 or the lower femur 12 is fixed by at least two internal fixing needles 2, so that the position of the upper femur 11 or the lower femur 12 is more stable, and the aligned position of the upper femur 11 and the lower femur 12 can be kept stable and unchanged, thereby being beneficial to resetting the femur 1.
Alternatively, all the connection points of the internal fixation needles 2 and the external connection plate 3 are positioned in the same straight line.
In view of the adjustable and fixable connection of the in-vivo fixation needle 2 to the in-vitro connection plate 3, in one embodiment the fixation means comprises an adjustable and fixable fixation plate 4 provided on the in-vitro connection plate 3 and a clamping block 5, the clamping block 5 being adapted to cooperate with the fixation plate 4 to clamp the in-vivo fixation needle 2. The fixing plate 4 is adjustably and fixedly arranged on the external connecting plate 3, so that the position-adjustable arrangement of the internal fixing needle 2 on the external connecting plate 3 can be ensured, and the condition that the internal fixing needle 2 is fixed on the external connecting plate 3 through the fixing plate 4 and the clamping block 5 after the upper femur section 11 and the lower femur section 12 are completely butted is also satisfied.
By adjusting the position of the in-vivo fixation needle 2 such that the upper femur 11 and the lower femur 12 are in abutment, the position of the in-vivo fixation needle 2 is a relative position to align the upper femur 11 and the lower femur 12, and thus the position of the fixation plate 4 for fixing the in-vivo fixation needle 2 is also a relative position, the fixation plate 4 moves with the adjustment of the position of the in-vivo fixation needle 2, so that it is necessary to first fix one in-vivo fixation needle 2 in consideration of the reference problem of adjusting the position of the in-vivo fixation needle 2, and thus in one embodiment, the fixation plate 4 includes a first fixation plate fixedly mounted at one end of the in-vitro connection plate 3 and a second fixation plate movably and fixedly mounted on the in-vitro connection plate 3.
Specifically, when in use, the first fixing plate is fixedly arranged at one end of the external connecting plate 3, one internal fixing needle 2 is fixed on the external connecting plate 3 through the first fixing plate and the clamping block 5 to serve as a reference for adjusting the other internal fixing needles 2, the other internal fixing needles 2 are fixed on the external connecting plate 3 through the second fixing plate and the clamping block 5, and the second fixing plate is movably arranged on the external connecting plate 3, so that the positions of the other internal fixing needles 2 can be adjusted relative to the internal fixing needles 2 fixed by the first fixing plate, and the upper femur 11 and the lower femur 12 are completely butted.
Considering that the second fixing plate is movable along the external connection plate 3 and the problem of installation convenience, in a specific embodiment, the external connection plate 3 is provided with a mounting channel 31 (as shown in fig. 4), the second fixing plate is movably arranged on the mounting channel 31, the second fixing plate is provided with a connecting hole, and the second fixing plate is fixed on the external connection plate 3 through a bolt 6 passing through the mounting channel 31 and the connecting hole and a first nut 7 matched with the bolt 6.
When the position of the internal fixation needle 2 is adjusted, the second fixation plate moves along the mounting channel 31 according to the position variation of the internal fixation needle 2; after the position of the in-vivo fixing needle 2 is determined, the shaft portion of the bolt 6 is passed through the mounting channel 31 and the connection hole on the second fixing plate, and the first nut 7 is screwed on the end of the bolt 6, thereby fixing the second fixing plate on the in-vitro connection plate 3.
The in-vivo fixing needle 2 is generally in the shape of a round bar, and thus, in order to better clamp the in-vivo fixing needle 2, the clamping block 5 is provided with a V-shaped groove 51 (as shown in fig. 5) or a C-shaped groove for clamping the in-vivo fixing needle 2 in one embodiment. When in use, the two V-shaped surfaces of the V-shaped groove 51 clamp the rod part of the internal fixation needle 2, and the rod part is matched with the side surface of the fixing plate 4 to clamp the internal fixation needle 2, so that the position of the internal fixation needle 2 is kept unchanged.
The portion of the clamping block 5 that clamps the internal fixation needle 2 may be of any shape, as long as the portion of the clamping block 5 that clamps the internal fixation needle 2 and the rod portion of the internal fixation needle 2 are secured to each other. For example, the part of the clamping block 5 for clamping the internal fixing needle 2 can be a C-shaped groove, the size of the C-shaped groove is determined by the diameter of the rod part of the internal fixing rod 2, and the C-shaped groove is guaranteed to be attached to the rod part of the internal fixing needle 2, so that the C-shaped groove and the side surface of the fixing plate 4 can be matched to clamp the internal fixing needle 2.
Since the internal fixation needle 2 is adjustably fixed to the external connection plate 3, the connection between the clamping block 5 and the fixing plate 4 is a removable connection, and in order to make the connection structure between the clamping block 5 and the fixing plate 4 simple and easy to implement, in a specific embodiment, the clamping block 5 is provided with a threaded rod 52, and the clamping block 5 is fixed to the fixing plate 4 by the threaded rod 52 and a second nut 8 matched with the threaded rod 52. Referring to fig. 6, after the threaded rod 52 passes through the through hole of the fixing plate 4, the V-shaped groove 51 of the clamping block 5 and the side surface of the fixing plate 4 clamp the internal fixing needle 2, the second nut 8 is screwed from the end of the threaded rod 52 to fix the clamping block 5 on the fixing plate 4.
When the upper femur 11 and the lower femur 12 are dislocated and the internal fixation needle 2 needs to be adjusted, the second nut 8 is first detached from the threaded rod 52, the clamping block 5 is then removed from the fixing plate 4, and the position of the internal fixation needle 2 is adjusted, so that the upper femur 11 or the lower femur 12 fixedly connected with the internal fixation needle 2 is driven to change, the upper femur 11 and the lower femur 12 are completely abutted, the fixing plate 4 is moved to the internal fixation needle 2, and the clamping block 5 is fixed on the fixing plate 4 through the threaded rod 52 and the second nut 8 matched with the threaded rod 52, so that the internal fixation needle 2 is fixed on the external connection plate 3, and the reduction of the femur 1 is ensured.
Considering that the connection between the clamping block 5 and the fixing plate 4 is a removable connection, there is a hidden danger that the clamping block is loosened from the fixing plate 4 and moves relative to the fixing plate 4, so in a specific embodiment, the fixing plate 4 is provided with a threaded hole, and a locking bolt 9 for preventing the clamping block 5 from loosening is screwed in the threaded hole. Due to the presence of the locking bolt 9, the clamping block 5 will be prevented from being released from the fixing plate 4.
The number of the threaded holes provided on the fixing plate 4 may be 1 or a plurality of the threaded holes, and the specific number is determined according to the structure and the connection mode of the clamping block 5 and the fixing plate 4; when the number of the threaded holes is multiple, the locking bolts 9 matched with the threaded holes are respectively screwed in the threaded holes, and the locking bolts 9 jointly act on the locking clamping blocks 5; referring to fig. 7, a threaded hole is formed on each of opposite sides of the fixing plate 4, and two locking bolts 9 are screwed into the threaded holes on the opposite sides, respectively, so as to clamp the threaded rod 52, thereby keeping its position unchanged and preventing the clamping block 5 from being released from the fixing plate 4.
In order to facilitate control of the adjustment angle of the in-vivo fixation needle 2 during correction of the position of the femur 1 by adjusting the in-vivo fixation needle 2, in one embodiment, the surface of the fixation plate 4 is engraved with graduations 41 (as shown in fig. 8) for facilitating the explicit adjustment angle of the in-vivo fixation needle 2. When the specific value of dislocation of the upper femur 11 and the lower femur 12 is confirmed by X-ray, the position of the internal fixation needle 2 after the corresponding value is adjusted can be directly determined according to the scale 41 on the surface of the fixing plate 4, so that the internal fixation needle 2 is more convenient and accurate to adjust.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The femur resetting and correcting device provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (4)
1. A femoral reduction and correction apparatus, comprising:
an internal fixation needle (2) fixedly connected with the femur (1), wherein the internal fixation needle (2) connected with the upper femur section (11) and the internal fixation needle (2) connected with the lower femur section (12) are at least one;
an external connecting plate (3) for setting the internal fixing needle (2), wherein the internal fixing needle (2) is adjustable through a fixing piece and can be fixedly connected with the external connecting plate (3);
the fixing piece comprises a clamping block (5) and a fixing plate (4) which is adjustable and can be fixedly arranged on the external connecting plate (3), and the clamping block (5) is used for clamping the internal fixing needle (2) in a matched mode with the fixing plate (4);
the fixing plate (4) comprises a first fixing plate and a second fixing plate, the first fixing plate is fixedly arranged on the external connecting plate (3), and the second fixing plate is movably and fixedly arranged on the external connecting plate (3);
the external connecting plate (3) is provided with a mounting channel (31), and the second fixing plate is movably arranged on the mounting channel (31);
the second fixing plate is provided with a connecting hole, and is fixed on the external connecting plate (3) through a bolt (6) penetrating through the mounting channel (31) and the connecting hole and a first nut (7) matched with the bolt (6);
the clamping block (5) is provided with a V-shaped groove (51) or a C-shaped groove for clamping the internal fixing needle (2), and the V-shaped groove (51) or the C-shaped groove of the clamping block (5) and the side surface of the fixing plate (4) clamp the internal fixing needle (2);
the clamping block (5) is provided with a threaded rod (52), and the clamping block (5) is fixed on the fixed plate (4) through the threaded rod (52) and a second nut (8) matched with the threaded rod (52);
the fixing plate (4) is provided with a threaded hole, and a locking bolt (9) for preventing the clamping block (5) from loosening is screwed in the threaded hole;
two opposite sides of the fixed plate (4) are respectively provided with one threaded hole, and two locking bolts (9) are respectively screwed into the threaded holes at two opposite sides so as to clamp the threaded rod (52) to keep the position of the threaded rod unchanged, and further the clamping block (5) is prevented from loosening and moving from the fixed plate (4).
2. Femoral reduction and correction according to claim 1, characterized in that one end of the internal fixation needle (2) is provided with external threads (21) for mating connection with the threaded bore of the femur (1).
3. Femoral reduction and correction according to claim 1, characterized in that there are at least two internal fixation needles (2) for connecting the upper femur segment (11), at least two internal fixation needles (2) for connecting the lower femur segment (12), and in that all the connection points of the internal fixation needles (2) with the external connection plate (3) are located in the same line.
4. A femoral reduction and correction according to any one of claims 1 to 3, wherein the surface of the fixation plate (4) is engraved with graduations (41) for facilitating the explicit angular adjustment of the in vivo fixation needle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537677.2A CN107184261B (en) | 2017-07-04 | 2017-07-04 | Femur resetting and correcting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537677.2A CN107184261B (en) | 2017-07-04 | 2017-07-04 | Femur resetting and correcting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107184261A CN107184261A (en) | 2017-09-22 |
| CN107184261B true CN107184261B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710537677.2A Active CN107184261B (en) | 2017-07-04 | 2017-07-04 | Femur resetting and correcting device |
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| CN (1) | CN107184261B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108670392B (en) * | 2018-05-29 | 2020-01-03 | 胡鹏 | Treatment device for bone fracture of hip and leg of orthopedics department |
| CN110772308A (en) * | 2019-11-07 | 2020-02-11 | 四川大学华西医院 | Adjustable external fixing support for rat femoral segmental bone defect |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1391711B1 (en) * | 2008-09-16 | 2012-01-27 | Orthofix Srl | ORTHOPEDIC DEVICE TO CORRECT LONG BONE DEFORMATIONS |
| CN207679512U (en) * | 2017-07-04 | 2018-08-03 | 广东工业大学 | A kind of femur resets and corrector |
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| CN107184261A (en) | 2017-09-22 |
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