CN113974809B - Tibia intramedullary nail - Google Patents
Tibia intramedullary nail Download PDFInfo
- Publication number
- CN113974809B CN113974809B CN202111534997.5A CN202111534997A CN113974809B CN 113974809 B CN113974809 B CN 113974809B CN 202111534997 A CN202111534997 A CN 202111534997A CN 113974809 B CN113974809 B CN 113974809B
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- sleeve
- extension plate
- intramedullary nail
- tibia
- length
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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
-
- 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
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- 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 provides a tibia intramedullary nail, which belongs to the technical field of medical appliances and comprises a first sleeve, a second sleeve and a positioning piece, wherein a first extension plate which extends outwards along the axial direction of the first sleeve is arranged on one side of the end part of the first sleeve, a second extension plate which extends outwards along the axial direction of the second sleeve is arranged on one side of the end part of the second sleeve, the first sleeve and the second sleeve are oppositely arranged and used for penetrating the first extension plate into the first sleeve, the second extension plate is penetrated into the second sleeve, the length of the first extension plate penetrating into the first sleeve and the length of the second extension plate penetrating into the second sleeve are adjusted, and the lengths of the first sleeve, the second extension plate and the first extension plate are positioned by means of the positioning piece so as to match the areas of different tibia fractures. The tibia intramedullary nail provided by the invention can automatically adjust the length and position, and is more convenient to operate without selecting tibia intramedullary nails of different types according to the requirements of different positions of tibia fracture.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a tibia intramedullary nail.
Background
Intramedullary nail surgery is the first fixation of tibial fractures, and requires the insertion of intramedullary nails of suitable length into the bone marrow cavity on both sides of the fractured end of the bone, so that the fracture is fixed.
The existing tibia intramedullary nail adopts an integral intramedullary nail structure, because the positions of the tibia fracture of the patient are different, the intramedullary nails with different lengths are often required to be matched, the operation of preparing the intramedullary nails with different lengths before each operation is troublesome, and once the prepared intramedullary nails cannot be matched with the positions of the tibia fracture of the patient, the intramedullary nails also need to be reselected from a storehouse, so that the optimal treatment opportunity of the patient can be missed.
Disclosure of Invention
The invention aims to provide a tibia intramedullary nail, which aims to solve the problem that different types of tibia intramedullary nails need to be selected for different positions of tibia fracture and is troublesome to operate.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a tibia intramedullary nail, includes first sleeve pipe, second sleeve pipe and setting element, one side of first sleeve pipe tip is equipped with the edge first sleeve pipe axial outside extension's first extension board, one side of second sleeve pipe tip is equipped with the edge second sleeve pipe axial outside extension's second extension board, first sleeve pipe with the second sleeve pipe sets up relatively, is used for with first extension board wears to locate in the second sleeve pipe, just second extension board wears to establish in the first sleeve pipe, through adjusting first extension board penetrates second sleeve pipe's length and second extension board penetrates first sleeve pipe's length is used for adjusting tibia intramedullary nail's length, and with the help of the setting element location first sleeve pipe with second extension board and second sleeve pipe with first extension board to match the region of different fracture.
As another embodiment of the present application, the positioning member includes two fastening nails, and the two fastening nails are located between the first extension plate and the second extension plate and are respectively disposed near the end of the first sleeve and near the end of the second sleeve.
As another embodiment of the present application, the fastening nail is a tapered nail, the diameter of its end is smaller than the distance between the first extension plate and the second extension plate, and the diameter of its root is larger than the distance between the first extension plate and the second extension plate.
As another embodiment of the present application, the first extension plate and the second extension plate are both rigid elastic sheets.
As another embodiment of the present application, the inner side wall of the first sleeve and/or the outer side wall of the second extension plate is provided with a first damping layer.
As another embodiment of the present application, the inner side wall of the second sleeve and/or the outer side wall of the first extension plate is provided with a second damping layer.
As another embodiment of the present application, the first sleeve is integrally formed with the first extension plate.
As another embodiment of the present application, the second sleeve is integrally formed with the second extension plate.
As another embodiment of the present application, the end of the first sleeve away from the first extension plate and the end of the second sleeve away from the second extension plate are provided with closed tapered ends.
The tibia intramedullary nail provided by the invention has the beneficial effects that: compared with the prior art, the tibia intramedullary nail has the advantages that the end, provided with the first extension plate, of the first sleeve and the end, provided with the second extension plate, of the second sleeve are arranged oppositely, the first extension plate penetrates into the second sleeve by moving the first sleeve and the second sleeve, the second extension plate penetrates into the first sleeve, the length, penetrating into the second sleeve, of the first extension plate and the length, penetrating into the first sleeve, of the second extension plate are adjusted by adjusting the distance between the first sleeve and the second sleeve, so that the length of the first extension plate penetrates into the second sleeve and the length of the second extension plate penetrates into the first sleeve are adjusted to match the areas of different tibia fractures, and the first sleeve, the second extension plate, the second sleeve and the first extension plate are positioned through the positioning piece, so that the length adjustment and the positioning of the tibia intramedullary nail can be completed. The tibia intramedullary nail provided by the invention can automatically adjust the length and position, and is more convenient to operate without selecting tibia intramedullary nails of different types according to the requirements of different positions of tibia fracture.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing the structure of a tibial intramedullary nail according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a tibial intramedullary nail provided in an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is an enlarged view at B in FIG. 2;
fig. 5 is an enlarged view at C in fig. 2.
In the figure: 100. a first sleeve; 110. a first extension plate; 120. a first damping layer; 200. a second sleeve; 210. a second extension plate; 220. a second damping layer; 300. fastening nails; 400. a tapered end.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, a tibial intramedullary nail provided by the present invention will now be described. The tibia intramedullary nail comprises a first sleeve 100, a second sleeve 200 and a positioning piece, wherein a first extension plate 110 extending outwards along the axial direction of the first sleeve 100 is arranged on one side of the end part of the first sleeve 100, a second extension plate 210 extending outwards along the axial direction of the second sleeve 200 is arranged on one side of the end part of the second sleeve 200, the first sleeve 100 and the second sleeve 200 are oppositely arranged and used for penetrating the first extension plate 110 into the second sleeve 200, the second extension plate 210 is penetrated into the first sleeve 100, the length of the first extension plate 110 penetrating into the second sleeve 200 and the length of the second extension plate 210 penetrating into the first sleeve 100 are adjusted, and the first sleeve 100 and the second extension plate 210 and the first extension plate 110 are positioned by means of the positioning piece so as to match the areas of different fractures.
Compared with the prior art, the tibia intramedullary nail provided by the invention has the advantages that one end of the first sleeve 100 provided with the first extension plate 110 and one end of the second sleeve 200 provided with the second extension plate 210 are oppositely arranged, the first extension plate 110 penetrates into the second sleeve 200 by moving the first sleeve 100 and the second sleeve 200, the second extension plate 210 penetrates into the first sleeve 100, the length of the first extension plate 110 penetrating into the second sleeve 200 and the length of the second extension plate 210 penetrating into the first sleeve 100 are adjusted by adjusting the distance between the first sleeve 100 and the second sleeve 100, so as to match the areas of different tibia fractures, and the first sleeve 100, the second extension plate 210, the second sleeve 200 and the first extension plate 110 are positioned by the positioning piece, so that the length adjustment and the positioning of the tibia intramedullary nail can be completed. The tibia intramedullary nail provided by the invention can automatically adjust the length and position, and is more convenient to operate without selecting tibia intramedullary nails of different types according to the requirements of different positions of tibia fracture.
Where a in fig. 1 and 2 is the tibial fracture zone. The first sleeve 100 and the second sleeve 200 are both cylindrical sleeves, the length of the first extension plate 110 is twice or more than that of the first sleeve 100, and the length of the second extension plate 210 is twice or more than that of the second sleeve 200, so that the adjustable range of the tibia intramedullary nail provided by the invention is larger, and the adaptability is stronger.
As an embodiment of the tibial intramedullary nail provided in the present invention, referring to fig. 1 and 2, the positioning member includes two fastening nails 300, and both fastening nails 300 are located between the first extension plate 110 and the second extension plate 210 and are disposed near the end of the first sleeve 100 and near the end of the second sleeve 200, respectively.
In this embodiment, the two fasteners 300 are screws, respectively, and the two fasteners 300 penetrate the first extension plate 110 and the second extension plate 210 and are fastened to the tibia to keep them stable. By the fastening nail 300 pressing the first extension plate 110 and the second extension plate 210 against its own external contour, the free end of the first extension plate 110 is pressed against the second sleeve 200, and the free end of the second extension plate 210 is pressed against the first sleeve 100, ensuring that the first extension plate 110 does not come out of the second sleeve 200, and the second extension plate 210 does not come out of the second sleeve 200.
As an embodiment of the intramedullary nail for tibia provided in the present invention, referring to fig. 3, the fastening nail 300 is a tapered nail, the diameter of the end of which is smaller than the distance between the first extension plate 110 and the second extension plate 210, and the diameter of the root of which is larger than the distance between the first extension plate 110 and the second extension plate 210.
In this embodiment, the tapered peg not only can facilitate its attachment to the tibia. Similarly, since the diameter of the end of the taper pin is smaller than the distance between the first extension plate 110 and the second extension plate 210, the diameter of the root of the taper pin is larger than the distance between the first extension plate 110 and the second extension plate 210, so that the taper pin can smoothly enter the gap between the first extension plate 110 and the second extension plate 210, and continuously drills into the tibia through the taper pin, so that the diameter of the taper pin part between the first extension plate 110 and the second extension plate 210 is gradually increased, and finally, the effect of simultaneously extruding the first extension plate 110 and the second extension plate 210 is achieved, and the relative stability of the first extension plate 110 and the second extension plate 210 is ensured.
As an embodiment of the tibial intramedullary nail provided by the present invention, the first extension plate 110 and the second extension plate 210 are rigid spring plates.
In this embodiment, the rigid elastic sheet has a certain elasticity and a certain rigidity, the rigidity of the first extension plate 110 and the second extension plate 210 can provide a supporting force for the fracture of tibia, and the elasticity of the first extension plate 110 and the second extension plate 210 can make the stability of the first extension plate 110 penetrating into the second sleeve 200 and the second extension plate 210 penetrating into the first sleeve 100 better.
As an embodiment of the tibial intramedullary nail provided in the present invention, referring to fig. 4 and 5, the inner sidewall of the first sleeve 100 and/or the outer sidewall of the second extension plate 210 is provided with a first damping layer 120.
In this embodiment, the first damping layer 120 is disposed on the inner side wall of the first sleeve 100, or disposed on the outer side wall of the second extension plate 210, or disposed on both the inner side wall of the first sleeve 100 and the outer side wall of the second extension plate 210, so as to improve the friction force of the second extension plate 210 penetrating into the first sleeve 100 and improve the stability of the two.
Alternatively, the first damping layer 120 may have a tooth-shaped structure or a bump structure, and may be engaged with each other in a two-by-two manner, or may be engaged with the smooth surface in any one manner, so as to improve the friction between the outer wall of the second extension plate 210 and the inner wall of the first sleeve 100.
As an embodiment of the tibial intramedullary nail provided in the present invention, referring to fig. 4 and 5, the inner sidewall of the second sleeve 200 and/or the outer sidewall of the first extension plate 110 is provided with a second damping layer 220.
In this embodiment, the second damping layer 220 is disposed on the inner side wall of the second sleeve 200, or disposed on the outer side wall of the first extension plate 110, or disposed on both the inner side wall of the second sleeve 200 and the outer side wall of the first extension plate 110, so as to improve the friction force of the first extension plate 110 penetrating into the second sleeve 200 and improve the stability of the two.
Alternatively, the second damping layer 220 may have a tooth-shaped structure or a bump structure, may be in butt fit with each other, or may be in a smooth fit with any manner, so as to improve the friction between the outer wall of the first extension plate 110 and the inner wall of the second sleeve 200.
As an embodiment of the tibial intramedullary nail provided by the present invention, the first sleeve 100 is integrally formed with the first extension plate 110.
In this embodiment, the first sleeve 100 and the first extension plate 110 are integrally formed, so that the structural strength of the first sleeve and the first extension plate can be improved, and the stability of the connection of the tibial fracture area can be ensured.
As an embodiment of the tibial intramedullary nail provided by the present invention, the second sleeve 200 is integrally formed with the second extension plate 210.
In this embodiment, the second sleeve 200 and the second extension plate 210 are integrally formed, so that the structural strength of the two can be improved, and the stability of the connection of the tibial fracture area can be ensured.
As an embodiment of the intramedullary nail for tibia provided in the present invention, referring to fig. 1, the end of the first sleeve 100 remote from the first extension plate 110 and the end of the second sleeve 200 remote from the second extension plate 210 are provided with closed tapered ends 400.
In this embodiment, tapered end 400 facilitates penetration of first sleeve 100 and second sleeve 200 into the tibia, and the closed configuration reduces bone marrow penetration into first sleeve 100 and second sleeve 200. Similarly, the closed ends are arranged at the end parts of the first sleeve 100 and the second sleeve 200, so that the structural strength of the first sleeve 100 and the second sleeve 200 can be improved, and the first sleeve 100 and the second sleeve 200 are prevented from being deformed under the stress of the working state.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. The tibia intramedullary nail is characterized by comprising a first sleeve, a second sleeve and a positioning piece, wherein a first extension plate extending outwards along the axial direction of the first sleeve is arranged on one side of the end part of the first sleeve, a second extension plate extending outwards along the axial direction of the second sleeve is arranged on one side of the end part of the second sleeve, the first sleeve and the second sleeve are oppositely arranged and used for penetrating the first extension plate into the second sleeve, the second extension plate is penetrated into the first sleeve, the length of the first extension plate penetrating into the second sleeve and the length of the second extension plate penetrating into the first sleeve are adjusted, the length of the tibia intramedullary nail is adjusted, the first sleeve, the second extension plate and the first extension plate are positioned by means of the positioning piece so as to match different fracture areas, the positioning piece comprises two fastening nails, and the two fastening nails are both positioned between the first sleeve and the second extension plate and are close to the end part of the first sleeve and are arranged close to the end part of the second sleeve respectively.
2. The tibial intramedullary nail of claim 1, wherein said fastener is a tapered nail having an end diameter smaller than the spacing of said first extension plate and said second extension plate and a root diameter larger than the spacing of said first extension plate and said second extension plate.
3. The tibial intramedullary nail of any one of claims 1-2, wherein the first extension plate and the second extension plate are rigid spring plates.
4. The tibial intramedullary nail of claim 3, wherein the inner side wall of the first sleeve and/or the outer side wall of the second expansion plate is provided with a first damping layer.
5. The tibial intramedullary nail of claim 3, wherein the inner side wall of the second sleeve and/or the outer side wall of the first expansion plate is provided with a second damping layer.
6. The tibial intramedullary nail of any one of claims 1-2, wherein the first sleeve is integrally formed with the first expansion plate.
7. The tibial intramedullary nail of any one of claims 1-2, wherein the second sleeve is integrally formed with the second expansion plate.
8. The tibial intramedullary nail of any one of claims 1-2, wherein an end of the first sleeve distal from the first expansion plate and an end of the second sleeve distal from the second expansion plate are each provided with a closed tapered end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111534997.5A CN113974809B (en) | 2021-12-15 | 2021-12-15 | Tibia intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111534997.5A CN113974809B (en) | 2021-12-15 | 2021-12-15 | Tibia intramedullary nail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113974809A CN113974809A (en) | 2022-01-28 |
| CN113974809B true CN113974809B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111534997.5A Active CN113974809B (en) | 2021-12-15 | 2021-12-15 | Tibia intramedullary nail |
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| CN (1) | CN113974809B (en) |
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| CN213606803U (en) * | 2020-10-29 | 2021-07-06 | 武汉儿童医院 | Combined length-adjustable intramedullary needle |
| CN112914702A (en) * | 2021-01-22 | 2021-06-08 | 山东第一医科大学附属省立医院(山东省立医院) | Intramedullary nail special for children and use method thereof |
| CN214907928U (en) * | 2021-02-25 | 2021-11-30 | 西藏寰驰医疗器械有限公司 | Interlocking intramedullary nail for femoral fracture |
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| CN113974809A (en) | 2022-01-28 |
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