CN117322985A - Femur retrograde intramedullary nail - Google Patents
Femur retrograde intramedullary nail Download PDFInfo
- Publication number
- CN117322985A CN117322985A CN202311488255.2A CN202311488255A CN117322985A CN 117322985 A CN117322985 A CN 117322985A CN 202311488255 A CN202311488255 A CN 202311488255A CN 117322985 A CN117322985 A CN 117322985A
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- screw
- intramedullary nail
- femur
- jack
- nail body
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- 210000000689 upper leg Anatomy 0.000 title abstract description 17
- 210000000501 femur body Anatomy 0.000 claims abstract description 67
- 238000005452 bending Methods 0.000 claims abstract description 24
- 210000001694 thigh bone Anatomy 0.000 claims description 9
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 20
- 230000037431 insertion Effects 0.000 abstract description 20
- 238000005516 engineering process Methods 0.000 abstract description 2
- 206010017076 Fracture Diseases 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 208000010392 Bone Fractures Diseases 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 4
- 210000003407 lower extremity of femur Anatomy 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 206010017088 Fracture nonunion Diseases 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 210000003414 extremity Anatomy 0.000 description 3
- 210000000281 joint capsule Anatomy 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 208000024779 Comminuted Fractures Diseases 0.000 description 1
- 208000008924 Femoral Fractures Diseases 0.000 description 1
- 241000587161 Gomphocarpus Species 0.000 description 1
- 208000004221 Multiple Trauma Diseases 0.000 description 1
- 208000006735 Periostitis Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003460 periosteum Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/74—Devices for the head or neck or trochanter of the femur
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
- A61B17/744—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to an intramedullary nail
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a femur retrograde intramedullary nail, which relates to the field of medical appliances and comprises a femur body, wherein an intramedullary nail body is arranged in the femur body, the intramedullary nail body is arranged in an L shape, and the top of the intramedullary nail body is provided with a vertebral part. The first bending part of the intramedullary nail body is consistent with the bending angle of the femur body, the intramedullary nail body can be prevented from deviating out of the femur body, the second transverse insertion hole, the third transverse insertion hole and the fourth transverse insertion hole are reserved holes at the screw fixing positions at the bottom end of the intramedullary nail body and are used for placing and fixing matched screws for fixing the intramedullary nail body and the femur body, the first transverse insertion hole and the vertical insertion hole are reserved holes for fixing the upper end of the femur body and the matched screws of the intramedullary nail body, and the matched screws of the intramedullary nail body are provided with a first screw, a second screw, a third screw, a fourth screw and a movable screw, so that the problem in the background technology is solved.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a femur retrograde intramedullary nail.
Background
Medical tools refer to various devices and instruments used in the fields of clinical diagnosis, treatment or surgery, and when a femur of a patient is fractured, an intramedullary nail is required to be used for positioning and curing the fracture part.
The treatment of distal femoral fractures, or supracondylar and intercondylar fractures of the femur, has historically been a difficult problem, and these fractures are often unstable comminuted fractures, frequently occurring in the elderly or in multiple traumas, and most of the supracondylar fractures of the femur currently use the interlocking intramedullary nail or steel plate screw technique, which has long incisions, extensive soft tissue separation and periosteum removal, and a more severe damage to the blood circulation at the fracture end, and a slower healing, and use of the common retrograde intramedullary nail: (1) because retrograde femoral intramedullary nail surgery does not operate on a fracture reduction table, it is difficult to determine rotation alignment and restore limb length; (2) when retrograde femoral intramedullary nails are locked in traffic, the operation of the proximal interlocking screw is troublesome because of the abundant thigh muscles; (3) including taking internal fixations, two incisions of the joint capsule are required. However, the operation process is complicated, and the fracture nonunion rate of the distal femur is high.
In order to solve the problems existing in the prior art, the problem of fixing the steel plate screw to the common retrograde intramedullary nail is solved. The medial epicondyle is taken as a nail feeding point, enters the femoral medullary cavity and passes upwards through the fracture part. The intramedullary nail head is in a cambered surface form which is jointed with the femur, and the tail part position reaches the tuberosity position. Improving the healing rate and success rate of the operation. In addition, the locking screw at the 3 rd hole position at the proximal end of the intramedullary nail adopts a universal screw, so that the locking screw can be conveniently inserted into the intramedullary nail for locking by timely adjusting the direction for different patients.
Disclosure of Invention
The invention aims to provide a femur retrograde intramedullary nail, which solves the problems in the background technology by arranging a femur body, an intramedullary nail body, a vertebral part, a first transverse jack, a vertical jack, a first bending part, a second transverse jack, a third transverse jack, a fourth transverse jack, a second bending part and a third bending part to be matched.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a thighbone retrograde intramedullary nail, includes the thighbone body, the inside of thighbone body is provided with the intramedullary nail body, the intramedullary nail body is L type setting, the top of intramedullary nail body is provided with the vertebra, first horizontal jack has been seted up at the top of intramedullary nail body surface, vertical jack has been seted up at the top of intramedullary nail body surface, the below of first horizontal jack is seted up to vertical jack, the surface of intramedullary nail body is provided with first bending portion, the second horizontal jack has been seted up to the bottom of intramedullary nail body surface, the third horizontal jack has been seted up to the bottom of intramedullary nail body surface, the fourth horizontal jack has been seted up to the bottom of intramedullary nail body surface, the third horizontal jack has been seted up in the below of second horizontal jack, the below of third horizontal jack has been seted up to the bottom of intramedullary nail body surface, the bottom of intramedullary nail body surface is provided with the second bending portion, the bottom on intramedullary nail body right side is provided with the third bending portion.
Further, a first screw is inserted into the inner cavity of the first transverse jack, and a second screw is inserted into the inner cavity of the vertical jack.
Further, the inner cavity of the second transverse jack is inserted with a movable screw, the inner cavity of the third transverse jack is inserted with a third screw, and the inner cavity of the fourth transverse jack is inserted with a fourth screw.
Further, the length of the first screw is shorter than that of the second screw, and the first screw and the second screw are made of medical titanium alloy.
Further, the movable screw is a universal screw, and the screw sleeve and the screw body of the movable screw are movable.
Further, the length of the third screw is shorter than that of the fourth screw, and the third screw and the fourth screw are made of medical stainless steel.
Further, the movable screw, the third screw and the fourth screw are all obliquely arranged, and the axis extension points of the movable screw, the third screw and the fourth screw are intersected.
Further, the first curved portion of the intramedullary nail body is seen at an angle of seventy degrees from a front view, and the first curved portion of the intramedullary nail body is seen at an angle of one hundred forty to one hundred fifty degrees from a side view.
Further, A, B, C, D and E marks are arranged on the surface of the femur body, and the A, B, C, D and E marks correspond to a first screw, a second screw, a movable screw, a third screw and a fourth screw respectively.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a model intramedullary nail, which is characterized in that an A point is adopted as an A point, a first bending part of the intramedullary nail body is consistent with the bending angle of a femur body, the intramedullary nail body can be prevented from deviating out of the femur body, a second transverse jack, a third transverse jack and a fourth transverse jack are arranged at reserved holes at the bottom end screw fixing positions of the intramedullary nail body and the femur body and are used for placing matched screws for fixing the intramedullary nail body and the femur body, the first transverse jack and the vertical jack are reserved holes for fixing the upper end of the femur body and the matched screws of the intramedullary nail body, the matched screws of the intramedullary nail body are provided with a first screw, a second screw, a third screw, a fourth screw and a movable screw, wherein the first screw is placed at the fixed screw transversely inserted at the top end of the femur body, the vertical jack is placed at the fixed screw transversely inserted at the top end of the femur body, the transverse distance is shorter than the second screw, the screw is prevented from penetrating through the femur body, the screw is ensured to be positioned in the femur body, the fourth transverse jack is placed at the position of the upper end screw fixing position of the femur body, the fourth screw is placed at the lower end of the femur body obliquely downwards, the third screw is placed at the third jack is placed at the lower end of the opposite end of the femur body obliquely downwards, the third jack is formed at the lower end of the femur body is opposite to the upper end of the femur body, the femur body is further inclined to the movable screw is formed at the upper end than the third jack is opposite to the upper end of the femur body, and is further inclined to the movable screw is positioned at the upper than the upper end of the femur body, and is positioned at the upper than the fourth jack is positioned at the upper end transversely opposite end of the femur body, and is opposite the femur end is opposite to the upper, the bent angle of the lower end of the femur body is consistent with the bent angle of the third bent part of the intramedullary nail, the bent angle of the lower end of the femur body is similar to the bent angle of the intramedullary nail A, the intramedullary nail body is ensured to be positioned in the femur body, and the positions C, D, E, A and B are the positions for placing the matched screws, and the four screws, the three screws, the movable screw, the first screw and the second screw are respectively placed to play a role in fixing the intramedullary nail body and the femur body.
Drawings
FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of an intramedullary nail body provided by an embodiment of the present invention;
FIG. 3 is a schematic side view of a bi-directional intramedullary nail body provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic front view of an intramedullary nail body provided in an embodiment of the present invention;
fig. 5 is a schematic structural view of a fourth screw, a third screw, a universal screw, a first screw and a second screw according to the embodiment of the present invention.
In the figure: 1. an intramedullary nail body; 2. a third transverse receptacle; 3. a first screw; 4. a second screw; 5. a femoral body; 6. a third screw; 7. a fourth screw; 8. a first bending portion; 9. a second transverse receptacle; 10. a third bending part; 11. a fourth transverse receptacle; 12. a second bending portion; 13. a vertebral section; 14. a movable screw; 15. a vertical jack; 16. a first transverse receptacle.
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.
In order to solve the existing common retrograde intramedullary nail; and (3) a step of: because retrograde femoral intramedullary nail surgery does not operate on a fracture reduction table, it is difficult to determine rotation alignment and restore limb length; and II: when retrograde femoral intramedullary nails are locked in traffic, the operation of the proximal interlocking screw is troublesome because of the abundant thigh muscles; thirdly,: the two times of incision of the joint capsule is needed including taking the internal fixation, however, the operation process is more complicated, and the fracture nonunion rate of the distal femur is higher, as shown in fig. 1-5, the following preferred technical scheme is provided:
the utility model provides a thighbone retrograde intramedullary nail, including thighbone body 5, the inside of thighbone body 5 is provided with intramedullary nail body 1, intramedullary nail body 1 is L type setting, the top of intramedullary nail body 1 is provided with vertebra 13, first horizontal jack 16 has been seted up at the top of intramedullary nail body 1 surface, vertical jack 15 has been seted up at the top of intramedullary nail body 1 surface, the below of first horizontal jack 16 is seted up to vertical jack 15, the surface of intramedullary nail body 1 is provided with first flexion 8, second horizontal jack 9 has been seted up to the bottom on intramedullary nail body 1 surface, third horizontal jack 2 has been seted up to the bottom on intramedullary nail body 1 surface, fourth horizontal jack 11 has been seted up to the bottom on intramedullary nail body 1 surface, the below of second horizontal jack 9 is seted up to third horizontal jack 2, the below of third horizontal jack 2 is seted up to fourth horizontal jack 11, the bottom on intramedullary nail body 1 surface is provided with second flexion 12, the bottom on intramedullary nail body 1 right side is provided with third flexion 10.
The inner cavity of the first transverse jack 16 is inserted with a first screw 3, and the inner cavity of the vertical jack 15 is inserted with a second screw 4.
The inner cavity of the second transverse jack 9 is inserted with a movable screw 14, the inner cavity of the third transverse jack 2 is inserted with a third screw 6, and the inner cavity of the fourth transverse jack 11 is inserted with a fourth screw 7.
The length of the first screw 3 is shorter than that of the second screw 4, and the first screw 3 and the second screw 4 are made of medical titanium alloy.
The movable screw 14 is a universal screw, and the screw sleeve and the screw body of the movable screw 14 are movable.
The length of the screw No. 6 is shorter than that of the screw No. 7, and the materials of the screw No. 6 and the screw No. 7 are medical stainless steel.
The movable screw 14, the third screw 6 and the fourth screw 7 are all obliquely arranged, and the axis extension points of the movable screw 14, the third screw 6 and the fourth screw 7 are intersected.
Specifically, when in use, the model intramedullary nail is an A point position, the first bending part 8 of the intramedullary nail body 1 is consistent with the bending angle of the femur body 5, the intramedullary nail body 1 can be prevented from deviating out of the femur body 5, the second transverse insertion hole 9, the third transverse insertion hole 2 and the fourth transverse insertion hole 11 are reserved holes at the screw fixing position at the bottom end of the intramedullary nail body 1 and are used for placing matched screws for fixing the intramedullary nail body 1 and the femur body 5, the first transverse insertion hole 16 and the vertical insertion hole 15 are reserved holes for fixing the upper end of the femur body 5 and the matched screws of the intramedullary nail body 1, the matched screws of the intramedullary nail body 1 are provided with a first screw 3, a second screw 4, a third screw 6, a fourth screw 7 and a movable screw 14, wherein the first screw 3 is placed at the fixing screw transversely inserted at the top end of the femur body 5, the second screw 4 is arranged at the position of the vertical jack 15 and is a fixing screw radially inserted into the upper end of the femur body 5, the transverse distance of the upper end of the femur body 5 is shorter than the radial distance, so that the first screw 3 is shorter than the distance of the second screw 4, the screw is prevented from penetrating the femur body 5 to ensure that the screw is positioned inside the femur body 5, the fourth screw 7 is arranged at the position of the fourth transverse jack 11 and is a fixing screw obliquely downward at the bottom end of the femur body 5, the third screw 6 is arranged at the position of the third transverse jack 2 and is a fixing screw obliquely downward at the bottom end of the femur body 5, the fourth screw 7 is longer than the third screw 6 because the bone of the third transverse jack 2 is weaker than the bone of the fourth transverse jack 11, the fixing screw is prevented from penetrating the femur body 5, the movable screw 14 is arranged at the position of the second transverse jack 9, the direction is downward to form an included angle with the third screw 6 and the fourth screw 7, the bottom end of the femur body 5 is further fixed, playing a fastening role, the upper end bent angle position H of the femur body 5 is flush with the vertebral part 13 at the top end of the intramedullary nail body 1, the lower end bent angle position J of the femur body 5 is consistent with the bent angle at the position of the third bent part of the intramedullary nail, the intramedullary nail body 1 is ensured to be positioned in the femur body 5, the positions C, D, E, A and B are the positions for placing matched screws, and the functions of fixing the intramedullary nail body 1 and the femur body 5 are achieved by respectively placing the fourth screw 7, the third screw 6, the movable screw 14, the first screw 3 and the second screw 4.
In order to solve the technical problem that the intramedullary nail body 1 is not easy to be inserted into the femur body 5 for positioning, as shown in fig. 3, the following preferred technical scheme is provided:
the angle of the first bending portion 8 of the intramedullary nail body 1 in front view is seventy degrees, and the angle of the first bending portion 8 of the intramedullary nail body 1 in side view is one hundred forty to one hundred fifty degrees.
Specifically, by setting the front view angle and the side view angle of the intramedullary nail body 1, the intramedullary nail body 1 can be prevented from being offset out of the femur body 5.
In order to solve the technical problem that the intramedullary nail body 1 lacks a fixing effect in the femur body 5, as shown in fig. 5, the following preferred technical scheme is provided:
the surface of the femur body 5 is provided with A, B, C, D and E marks, A, B, C, D and E marks corresponding to screw No. 3, screw No. 4, movable screw 14, screw No. 6 and screw No. 7, respectively.
Specifically, by providing the screw No. 3, the screw No. 4, the movable screw 14, the screw No. 6, and the screw No. 7, the intramedullary nail body 1 can be effectively positioned inside the femur body 5.
Working principle: when in use, the model intramedullary nail is an A point position, the first bending part 8 of the intramedullary nail body 1 is consistent with the bending angle of the femur body 5, the intramedullary nail body 1 can be prevented from deviating out of the femur body 5, the second transverse insertion hole 9, the third transverse insertion hole 2 and the fourth transverse insertion hole 11 are reserved holes at the screw fixing position at the bottom end of the intramedullary nail body 1 and are used for placing matched screws for fixing the intramedullary nail body 1 and the femur body 5, the first transverse insertion hole 16 and the vertical insertion hole 15 are reserved holes for fixing the upper end of the femur body 5 and the matched screws of the intramedullary nail body 1, the matched screws of the intramedullary nail body 1 are provided with a first screw 3, a second screw 4, a third screw 6, a fourth screw 7 and a movable screw 14, wherein the first screw 3 is placed at the fixing screw transversely inserted at the top end of the femur body 5, the second screw 4 is arranged at the position of the vertical jack 15 and is a fixing screw radially inserted into the upper end of the femur body 5, the transverse distance of the upper end of the femur body 5 is shorter than the radial distance, so that the first screw 3 is shorter than the distance of the second screw 4, the screw is prevented from penetrating the femur body 5 to ensure that the screw is positioned inside the femur body 5, the fourth screw 7 is arranged at the position of the fourth transverse jack 11 and is a fixing screw obliquely downward at the bottom end of the femur body 5, the third screw 6 is arranged at the position of the third transverse jack 2 and is a fixing screw obliquely downward at the bottom end of the femur body 5, the fourth screw 7 is longer than the third screw 6 because the bone of the third transverse jack 2 is weaker than the bone of the fourth transverse jack 11, the fixing screw is prevented from penetrating the femur body 5, the movable screw 14 is arranged at the position of the second transverse jack 9, the direction is downward to form an included angle with the third screw 6 and the fourth screw 7, the bottom end of the femur body 5 is further fixed, playing a fastening role, the upper end bent angle position H of the femur body 5 is flush with the vertebral part 13 at the top end of the intramedullary nail body 1, the lower end bent angle position J of the femur body 5 is consistent with the bent angle at the position of the third bent part of the intramedullary nail, the intramedullary nail body 1 is ensured to be positioned in the femur body 5, the positions C, D, E, A and B are the positions for placing matched screws, and the functions of fixing the intramedullary nail body 1 and the femur body 5 are achieved by respectively placing the fourth screw 7, the third screw 6, the movable screw 14, the first screw 3 and the second screw 4.
To sum up: the femur retrograde intramedullary nail solves the problem of the prior common retrograde intramedullary nail by arranging the femur body 5, the intramedullary nail body 1, the vertebral part 13, the first transverse insertion hole 16, the vertical insertion hole 15, the first bending part 8, the second transverse insertion hole 9, the third transverse insertion hole 2, the fourth transverse insertion hole 11, the second bending part 12 and the third bending part 10 to be matched; and (3) a step of: because retrograde femoral intramedullary nail surgery does not operate on a fracture reduction table, it is difficult to determine rotation alignment and restore limb length; and II: when retrograde femoral intramedullary nails are locked in traffic, the operation of the proximal interlocking screw is troublesome because of the abundant thigh muscles; thirdly,: two times of incision of the joint capsule is needed including taking the internal fixation, however, the operation process is more complicated, and the fracture nonunion rate of the distal femur is higher.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a thighbone retrograde intramedullary nail, includes thighbone body (5), its characterized in that: the inside of thighbone body (5) is provided with intramedullary nail body (1), intramedullary nail body (1) is L type setting, the top of intramedullary nail body (1) is provided with vertebra (13), first horizontal jack (16) have been seted up at the top on intramedullary nail body (1) surface, vertical jack (15) are seted up in the below of first horizontal jack (16), the surface of intramedullary nail body (1) is provided with first flexion (8), second horizontal jack (9) have been seted up to the bottom on intramedullary nail body (1) surface, third horizontal jack (2) have been seted up to the bottom on intramedullary nail body (1) surface, fourth horizontal jack (11) have been seted up at the bottom on intramedullary nail body (1) surface, the bottom of third horizontal jack (2) have been seted up in the bottom of third horizontal jack (2) the third side of intramedullary nail body (1), the bottom of curved side (10) has been provided with the bottom of intramedullary nail body (1).
2. A femoral retrograde intramedullary nail according to claim 1, wherein: the inner cavity of the first transverse jack (16) is inserted with a first screw (3), and the inner cavity of the vertical jack (15) is inserted with a second screw (4).
3. A femoral retrograde intramedullary nail according to claim 1, wherein: the inner cavity of the second transverse jack (9) is inserted with a movable screw (14), the inner cavity of the third transverse jack (2) is inserted with a third screw (6), and the inner cavity of the fourth transverse jack (11) is inserted with a fourth screw (7).
4. A femoral retrograde intramedullary nail according to claim 2, wherein: the length of the first screw (3) is shorter than that of the second screw (4), and the first screw (3) and the second screw (4) are made of medical titanium alloy.
5. A femoral retrograde intramedullary nail according to claim 3, wherein: the movable screw (14) is a universal screw, and the screw sleeve and the screw body of the movable screw (14) are movable.
6. A femoral retrograde intramedullary nail according to claim 3, wherein: the length of the screw No. 6 is shorter than that of the screw No. 7, and the screw No. 6 and the screw No. 7 are made of medical stainless steel.
7. A femoral retrograde intramedullary nail according to claim 3, wherein: the movable screw (14), the third screw (6) and the fourth screw (7) are all obliquely arranged, and the axis extension points of the movable screw (14), the third screw (6) and the fourth screw (7) are intersected.
8. A femoral retrograde intramedullary nail according to claim 1, wherein: the angle of the first bending part (8) of the intramedullary nail body (1) is seventy degrees when seen from the front, and the angle of the first bending part (8) of the intramedullary nail body (1) is one hundred forty to one hundred fifty degrees when seen from the side.
9. A femoral retrograde intramedullary nail according to claim 1, wherein: the surface of the femur body (5) is provided with A, B, C, D and E marks, and the A, B, C, D and E marks respectively correspond to a first screw (3), a second screw (4), a movable screw (14), a third screw (6) and a fourth screw (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311488255.2A CN117322985A (en) | 2023-11-09 | 2023-11-09 | Femur retrograde intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311488255.2A CN117322985A (en) | 2023-11-09 | 2023-11-09 | Femur retrograde intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117322985A true CN117322985A (en) | 2024-01-02 |
Family
ID=89293406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311488255.2A Pending CN117322985A (en) | 2023-11-09 | 2023-11-09 | Femur retrograde intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117322985A (en) |
-
2023
- 2023-11-09 CN CN202311488255.2A patent/CN117322985A/en active Pending
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