CN112914702A - Intramedullary nail special for children and use method thereof - Google Patents
Intramedullary nail special for children and use method thereof Download PDFInfo
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- CN112914702A CN112914702A CN202110088404.0A CN202110088404A CN112914702A CN 112914702 A CN112914702 A CN 112914702A CN 202110088404 A CN202110088404 A CN 202110088404A CN 112914702 A CN112914702 A CN 112914702A
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- 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
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- 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
- A61B17/7216—Intramedullary pins, nails or other devices for bone lengthening or compression
- A61B17/7225—Intramedullary pins, nails or other devices for bone lengthening or compression for bone compression
-
- 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
- A61B17/7283—Intramedullary pins, nails or other devices with special cross-section of the nail
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
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- 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 an intramedullary nail special for children, which comprises a nail sleeve and a nail core, wherein the distal end of the nail core is provided with a first locking hole, the distal end of the nail core is driven into femoral bone marrow, passes through a growth plate at the lower end of femur, and is driven into the locking hole by a kirschner wire or a screw at an epiphysis position to lock the nail core, the distal end of the nail sleeve is driven into the femoral bone marrow from a greater trochanter at the proximal end of the femur to reach the metaphysis end without passing through the growth plate, the nail sleeve is sleeved on the nail core, the proximal part of the nail sleeve is arranged outside the femur, the nail sleeve is provided with a second locking hole, and is driven into the second. The invention is applied to the distal femur fracture of children, can prolong, prevent rotation and lock, can fix the fracture and can keep the normal growth function of the growth plate.
Description
Technical Field
The invention belongs to the technical field of intramedullary fixation devices for femoral fracture of children, and particularly relates to an intramedullary nail special for children.
Background
The distal femur fracture of children is a common injury of children, and is troublesome in clinical treatment due to the particularity of the growth plate at the distal femur of children.
The intramedullary nail in the prior art is designed for adults, cannot adapt to the characteristics of a femoral growth plate for children, and cannot meet the actual requirement.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the intramedullary nail special for children, which is applied to the distal fracture of the femur of the children, can be used for prolonging, preventing rotation and locking, can fix the fracture and can keep the normal growth function of a growth plate.
A method for using intramedullary nail special for children is applied to the fracture of distal femur of children, can prolong, prevent rotation and lock, can fix the fracture and can keep the normal growth function of growth plate.
In order to achieve the purpose, the invention adopts the technical scheme that:
a special intramedullary nail for children comprises a nail sleeve and a nail core, wherein a first locking hole is formed in the far end of the nail core, the far end of the nail core is driven into femoral bone marrow and penetrates through a growth plate at the lower end of femur, a Kirschner wire or a screw is driven at an epiphysis position to enter the locking hole to lock the nail core, the far end of the nail sleeve is driven into the femoral bone marrow from a greater trochanter at the near end of the femur to reach a metaphysis end and does not pass through the growth plate, the nail sleeve is sleeved on the nail core, the near end part of the nail sleeve is arranged outside the femur, a second locking hole is formed in the nail sleeve, and the screw is.
The near end of the nail sleeve is provided with three locking holes II.
The distal end of the nail core is provided with two locking holes I.
The nail core is a polygonal prism, the nail sleeve is a hollow sleeve, the shape of the inner side pipe wall of the nail sleeve is the same as or mutually clamped with the outer side surface of the nail core, and when the nail sleeve is sleeved on the outer side of the nail core, the nail core of the rotary nail sleeve synchronously rotates.
The nail core is a triangular prism, the outer side surface of the nail sleeve is a circular tube, and the inner side surface of the nail sleeve is a pipeline with the same shape as the nail core.
When the distal end of the nail core is driven into femoral bone marrow, the proximal end of the nail core is connected with the guide rod, the end part of the proximal end of the nail core is provided with a connecting hole, the distal end of the guide rod is provided with a connecting column, the connecting column is in threaded connection with the connecting hole, after the nail core is locked, the nail sleeve is sleeved on the nail core along the guide rod, and the guide rod is rotated to take out the nail sleeve.
The guide rod is cylindrical.
The diameter of the outer side surface of the guide rod is less than or equal to the diameter of an inscribed circle of the cross section of the nail core.
The connecting hole includes toper guide way and screw hole, and the nail core up end is located to the toper guide way, and the guide way bottom is located to the screw hole, and the spliced pole includes toper boss and screw rod, and toper boss and toper guide way laminating, screw rod and screw hole cooperation.
A method for using an intramedullary nail special for children comprises the following steps: reducing distal femur fracture; the second step is that: the connected nail core and the guide rod are driven into femoral bone marrow from the proximal greater trochanter of the femur, penetrate through the distal growth plate of the femur, and a kirschner wire or a screw is driven at the epiphysis to enter a locking hole to lock the nail core; the third step: the nail sleeve is driven into the femoral bone marrow along the guide rod and sleeved outside the nail core to reach the metaphysis without passing through a growth plate, and the proximal part of the nail sleeve is arranged outside the femur; the fourth step: the guide rod is taken out, the screw is screwed into the second locking hole on the nail sleeve through the skin to lock the nail sleeve, and the fracture reduction internal fixation is completed.
The invention has the beneficial effects that:
1) the growth plate is applied to distal femur fracture of children, can be prolonged, prevent rotation and be locked, and not only can fix the fracture, but also can keep the normal growth function of the growth plate.
2) The nail core is trilateral, can prevent the nail core rotation after cooperating with the nail cover internal side.
3) The peg core is small in size and does not affect growth of the growth plate when locked at the epiphysis through the growth plate.
4) The length of the nail sleeve sleeved on the nail core can be long or short, so that the total length of the nail sleeve can be adjusted randomly according to the length of the thighbone of a patient, and the fixation is more convenient.
5) The guide rod is convenient for installing the nail core and the nail sleeve and is convenient to operate.
6) The guide way is convenient for the installation of nail core and guide bar, aligns more easily, and the nail core is torn open to the later stage of being convenient for.
7) With the sleeve locked at the proximal end of the femur and the core locked at the distal epiphysis of the femur, as the growth plate with growth capabilities grows to cause the femur to increase in length, the sleeve slides proximally relative to the core, thereby effecting lengthening of the internal fixation device.
Drawings
FIG. 1 is a schematic view of a nail sleeve for nesting an intramedullary nail specially used for children.
Fig. 2 is a schematic view of the intramedullary nail special for children when the nail core is driven in.
FIG. 3 is a schematic view of the completion of the reduction and internal fixation of the fracture of the intramedullary nail special for children.
Fig. 4 is a schematic view of a nail core of an intramedullary nail special for children.
Fig. 5 is a top view of the intramedullary nail core special for children of the invention.
Fig. 6 is a top view of the intramedullary nail sleeve specially used for children.
Fig. 7 is a schematic view of a guiding rod of an intramedullary nail specially used for children.
In the figure, 1, a guide rod; 2. the femur; 3. a nail core; 4. a Kirschner wire; 5. nailing a sleeve; 6. a screw; 7. connecting columns; 8. connecting holes; 9. a growth plate; 10. epiphyseal disease;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Example 1
Referring to fig. 7, the intramedullary nail special for children comprises a nail sleeve 5 and a nail core 3, wherein the far end of the nail core 3 is provided with a first locking hole, the far end of the nail core 3 is driven into the marrow of a femur 2, passes through a growth plate at the lower end of the femur 2, a kirschner wire 4 or a screw is driven into the first locking hole 3 at an epiphysis 10, the far end of the nail sleeve 5 is driven into the marrow of the femur 2 from the proximal greater trochanter of the femur 2 to reach the metaphysis without passing through a growth plate 9, the nail sleeve 5 is sleeved on the nail core 3, the near end part of the nail sleeve 5 is arranged outside the femur 2, a second locking hole is arranged on the nail sleeve 5, and the screw 6 is driven into the second locking hole through skin to lock the.
The bone fracture plate is applied to the far-end fracture of the femur 2 of the child, can be prolonged, can prevent rotation and locking, can fix the fracture and can keep the normal growth function of the growth plate 9.
The length of the nail sleeve 5 sleeved on the nail core 3 can be long or short, so that the total length of the nail sleeve can be adjusted randomly according to the length of the femur 2 of a patient, and the fixation is more convenient.
The stem 3 is small in size and does not interfere with growth of the growth plate 9 when locked across the growth plate 9 at the epiphysis 10.
The proximal end of the nail sleeve 5 is provided with three locking holes II.
The distal end of the mandrel 3 is provided with two locking holes I.
The nail core 3 is polygonal prism, the nail cover 5 is a hollow sleeve, the shape of the inner side pipe wall of the nail cover 5 is the same as or mutually clamped with the outer side surface of the nail core 3, and when the nail cover 5 is sleeved on the outer side of the nail core 3, the nail core 3 synchronously rotates by rotating the nail cover 5.
The nail core 3 is trilateral, and can prevent the nail core 3 from rotating after being matched with the inner side surface of the nail sleeve 5.
The nail core 3 comprises but is not limited to a triangular prism, a quadrangular prism and a hexagonal prism, the outer side surface of the nail sleeve 5 is a round pipe, and the inner side surface is a pipeline with the same shape as the nail core 3.
When the distal end of the nail core 3 is driven into the marrow of the femur 2, the proximal end of the nail core 3 is connected with the guide rod 1, the end part of the proximal end of the nail core 3 is provided with a connecting hole 8, the distal end of the guide rod 1 is provided with a connecting column 7, the connecting column 7 is in threaded connection with the connecting hole 8, after the nail core 3 is locked, the nail sleeve 5 is sleeved on the nail core 3 along the guide rod 1, and the nail core 1 is taken out by rotating the guide rod 1.
The guide rod 1 comprises a cylindrical, prismatic, curved rod.
The diameter of the outer side surface of the guide rod 1 is smaller than or equal to the diameter of an inscribed circle of the cross section of the nail core 3, and the diameter does not influence the nesting of the nail sleeve.
The guide rod 1 is convenient for installing the nail core 3 and the nail sleeve 5, and the operation is convenient.
Connecting hole 8 includes toper guide way and screw hole, and 3 up end on the nail core are located to the toper guide way, and the guide way bottom is located to the screw hole, and spliced pole 7 includes toper boss and screw rod, and the laminating of toper boss and toper guide way, screw rod and screw hole cooperation.
The guide way is convenient for the installation of nail core 3 and guide bar 1, aligns more easily, is convenient for later stage tear open nail core 3.
A method for using an intramedullary nail special for children comprises the following steps: reducing the fracture of the distal end of the femur 2; the second step is that: as shown in fig. 2, the connected nail core 3 and the guide rod 1 are driven into the marrow of the femur 2 from the proximal greater trochanter of the femur 2, pass through the distal growth plate 9 of the femur 2, and drive the kirschner wire 4 or screw into the locking hole at the epiphysis 10, namely the screw 6 and the core 3; the third step: as shown in fig. 3, the sleeve 5 is driven along the guide rod 1 into the medulla of the femur 2, around the outside of the core 3, to the metaphysis, without passing through the growth plate 9, with the proximal part of the sleeve 5 lying outside the femur 2; the fourth step: as shown in figure 1, the guide rod 1 is taken out, a percutaneous screwing screw 6 enters a locking hole II on the nail sleeve to lock the nail sleeve 5, and the fracture reduction internal fixation is completed.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.
Claims (10)
1. The intramedullary nail special for children is characterized by comprising a nail sleeve and a nail core, wherein a first locking hole is formed in the far end of the nail core, the far end of the nail core is driven into femoral bone marrow and penetrates through a growth plate at the lower end of femur, a kirschner wire or a screw is driven at an epiphysis position to enter the locking hole to lock the nail core, the far end of the nail sleeve is driven into the femoral bone marrow from a greater trochanter at the near end of the femur to reach a metaphysis end without passing through the growth plate, the nail sleeve is sleeved on the nail core, the near end part of the nail sleeve is arranged outside the femur, a second locking hole is formed in the nail sleeve, and the screw is driven through.
2. The intramedullary nail of claim 1, wherein the proximal end of the sleeve has two locking holes.
3. The intramedullary nail of claim 1, wherein the distal end of the shank defines one of the two locking holes.
4. The intramedullary nail of claim 1, wherein the nail core is a polygonal prism, the nail sleeve is a hollow sleeve, the shape of the inner wall of the nail sleeve is the same as or engaged with the outer surface of the nail core, and the nail core is rotated synchronously when the nail sleeve is sleeved on the outer surface of the nail core.
5. The intramedullary nail special for children according to claim 1, wherein the nail core is a triangular prism, the outer side of the nail sleeve is a circular tube, and the inner side is a tube with the same shape as the nail core.
6. The intramedullary nail special for children as claimed in claim 1, wherein, when the distal end of the nail core is driven into the femoral bone marrow, the proximal end of the nail core is connected with the guiding rod, the proximal end of the nail core is provided with a connecting hole, the distal end of the guiding rod is provided with a connecting post, the connecting post is in threaded connection with the connecting hole, after the nail core is locked, the nail sleeve is sleeved on the nail core along the guiding rod, and the guiding rod is rotated to take out the nail sleeve.
7. The intramedullary nail of claim 1, wherein the guide rod is cylindrical.
8. The intramedullary nail of claim 1, wherein the guide rod has a lateral diameter less than or equal to a diameter of an inscribed circle of the cross-section of the shank.
9. The intramedullary nail special for children according to claim 1, wherein the connection hole comprises a tapered guide slot and a threaded hole, the tapered guide slot is disposed on the upper end surface of the nail core, the threaded hole is disposed at the bottom of the guide slot, the connection post comprises a tapered boss and a threaded rod, the tapered boss is attached to the tapered guide slot, and the threaded rod is engaged with the threaded hole.
10. A method for using an intramedullary nail special for children is characterized by comprising the following steps: reducing distal femur fracture; the second step is that: the connected nail core and the guide rod are driven into femoral bone marrow from the proximal greater trochanter of the femur, penetrate through the distal growth plate of the femur, and a kirschner wire or a screw is driven at the epiphysis to enter a locking hole to lock the nail core; the third step: the nail sleeve is driven into the femoral bone marrow along the guide rod and sleeved outside the nail core to reach the metaphysis without passing through a growth plate, and the proximal part of the nail sleeve is arranged outside the femur; the fourth step: and taking out the guide rod, driving a locking nail or a screw into a locking hole II on the nail sleeve through skin to lock the nail sleeve, and completing the internal fixation of fracture reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110088404.0A CN112914702B (en) | 2021-01-22 | 2021-01-22 | Intramedullary nail special for children and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110088404.0A CN112914702B (en) | 2021-01-22 | 2021-01-22 | Intramedullary nail special for children and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112914702A true CN112914702A (en) | 2021-06-08 |
| CN112914702B CN112914702B (en) | 2023-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110088404.0A Active CN112914702B (en) | 2021-01-22 | 2021-01-22 | Intramedullary nail special for children and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974809A (en) * | 2021-12-15 | 2022-01-28 | 河北医科大学第三医院 | Tibia intramedullary nail |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5474561A (en) * | 1994-02-01 | 1995-12-12 | Yao; Meei-Huei | All positional and universal guiding device for interlocking intramedullary nail |
| CN203861331U (en) * | 2014-04-30 | 2014-10-08 | 苗武胜 | Internal fixing device for femoral neck fracture of child |
| US20180042651A1 (en) * | 2015-02-17 | 2018-02-15 | The Sydney Children's Hospitals Network (Randwick And Westmead) | A bone rod |
| CN108433774A (en) * | 2018-04-02 | 2018-08-24 | 泉州市正骨医院 | A kind of long bone of limbs metaphysis takes bone object |
| CN108904025A (en) * | 2018-07-26 | 2018-11-30 | 梅海波 | A kind of extensible children's shin bone intramedullary rod and its method for implantation |
| CN208492274U (en) * | 2017-09-18 | 2019-02-15 | 薛鸣丰 | A kind of children fix device with fracture of neck of femur |
| CN209713096U (en) * | 2019-01-28 | 2019-12-03 | 宁德市闽东医院 | A kind of improvement hollow screw with the solid bolt of self tapping |
| CN215228271U (en) * | 2021-06-09 | 2021-12-21 | 山东第一医科大学附属省立医院(山东省立医院) | Dedicated thighbone neck fracture fixing device of children |
-
2021
- 2021-01-22 CN CN202110088404.0A patent/CN112914702B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5474561A (en) * | 1994-02-01 | 1995-12-12 | Yao; Meei-Huei | All positional and universal guiding device for interlocking intramedullary nail |
| CN203861331U (en) * | 2014-04-30 | 2014-10-08 | 苗武胜 | Internal fixing device for femoral neck fracture of child |
| US20180042651A1 (en) * | 2015-02-17 | 2018-02-15 | The Sydney Children's Hospitals Network (Randwick And Westmead) | A bone rod |
| CN208492274U (en) * | 2017-09-18 | 2019-02-15 | 薛鸣丰 | A kind of children fix device with fracture of neck of femur |
| CN108433774A (en) * | 2018-04-02 | 2018-08-24 | 泉州市正骨医院 | A kind of long bone of limbs metaphysis takes bone object |
| CN108904025A (en) * | 2018-07-26 | 2018-11-30 | 梅海波 | A kind of extensible children's shin bone intramedullary rod and its method for implantation |
| CN209713096U (en) * | 2019-01-28 | 2019-12-03 | 宁德市闽东医院 | A kind of improvement hollow screw with the solid bolt of self tapping |
| CN215228271U (en) * | 2021-06-09 | 2021-12-21 | 山东第一医科大学附属省立医院(山东省立医院) | Dedicated thighbone neck fracture fixing device of children |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974809A (en) * | 2021-12-15 | 2022-01-28 | 河北医科大学第三医院 | Tibia intramedullary nail |
| CN113974809B (en) * | 2021-12-15 | 2023-07-18 | 河北医科大学第三医院 | Tibia intramedullary nail |
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| Publication number | Publication date |
|---|---|
| CN112914702B (en) | 2023-02-24 |
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