CN113974809A - Tibia intramedullary nail - Google Patents
Tibia intramedullary nail Download PDFInfo
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- CN113974809A CN113974809A CN202111534997.5A CN202111534997A CN113974809A CN 113974809 A CN113974809 A CN 113974809A CN 202111534997 A CN202111534997 A CN 202111534997A CN 113974809 A CN113974809 A CN 113974809A
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- sleeve
- extension plate
- intramedullary nail
- plate
- tibial
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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
- A61B17/7233—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)
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- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a tibial intramedullary nail, which belongs to the technical field of medical instruments and comprises 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 enabling the first extension plate to penetrate into the first sleeve, the second extension plate penetrates into the second sleeve, the length of the tibial intramedullary nail is adjusted by adjusting 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, and the first sleeve, the second extension plate and the first extension plate are positioned by the positioning piece so as to match areas with different tibial fractures. The length of the tibial intramedullary nail provided by the invention can be automatically adjusted and the tibial intramedullary nail can be positioned, different types of tibial intramedullary nails do not need to be selected according to different positions of tibial fractures, and the operation is simpler and more convenient.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a tibial intramedullary nail.
Background
Intramedullary nail operation is the first choice of fixing operation for tibia fracture, and needs to insert intramedullary nails with proper length into bone marrow cavities on both sides of the fracture end so as to fix the fracture.
The existing tibial intramedullary nail mostly adopts an integral intramedullary nail structure, because the position of the tibial fracture of a patient is 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, once the prepared intramedullary nails cannot be matched with the position of the tibial fracture of the patient, the intramedullary nails are required to be reselected from a storehouse, and the optimal treatment time of the patient can be missed.
Disclosure of Invention
The invention aims to provide a tibial intramedullary nail, and aims to solve the problem that different types of tibial intramedullary nails are required to be selected for different positions of tibial fractures, so that the operation is troublesome.
In order to achieve the purpose, the invention adopts the technical scheme that: provides a tibial intramedullary nail, which comprises a first sleeve, a second sleeve and a positioning piece, wherein one side of the end part of the first sleeve is provided with a first extension plate which extends outwards along the axial direction 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, for inserting the first spreader plate into the second sleeve and the second spreader plate into the first sleeve, by adjusting 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, the length of the tibia intramedullary nail is adjusted, and the first sleeve and the second extension plate and the second sleeve and the first extension plate are positioned by the positioning piece so as to match regions of different tibia fractures.
As another embodiment of this application, the setting element includes two fastenings, two the fastenings all are located first extension board with between the second extension board, and be close to respectively first sheathed tube tip setting with be close to the sheathed tube tip setting of second.
As another embodiment of the present application, the fastening nail is a tapered nail having an end diameter smaller than a distance between the first extension plate and the second extension plate and a root diameter larger than a distance between the first extension plate and the second extension plate.
As another embodiment of the present application, the first extending plate and the second extending plate are both rigid elastic pieces.
As another embodiment of the application, the inner side wall of the first sleeve and/or the outer side wall of the second extension plate are/is provided with a first damping layer.
As another embodiment of the application, the inner side wall of the second sleeve and/or the outer side wall of the first extension plate are/is provided with a second damping layer.
As another embodiment of the present application, the first sleeve is integrally formed with the first extending plate.
As another embodiment of the present application, the second sleeve is integrally formed with the second extending plate.
As another embodiment of the present application, the end of the first bushing away from the first extending plate, and the end of the second bushing away from the second extending plate are both provided with a closed tapered end.
The tibial intramedullary nail provided by the invention has the beneficial effects that: compared with the prior art, the length of the tibial intramedullary nail can be adjusted and positioned by adjusting the distance between the first sleeve and the second sleeve, namely adjusting 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 to match different tibial fracture areas, and positioning the first sleeve, the second extension plate, the second sleeve and the first extension plate through the positioning piece. The length of the tibial intramedullary nail provided by the invention can be automatically adjusted and the tibial intramedullary nail can be positioned, different types of tibial intramedullary nails do not need to be selected according to different positions of tibial fractures, and the operation is simpler and more convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram 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 accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along 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 spreader plate; 120. a first damping layer; 200. a second sleeve; 210. a second spreader plate; 220. a second damping layer; 300. fastening nails; 400. a tapered end.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present 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 merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, a tibial intramedullary nail provided by the present invention will now be described. The tibial 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 enabling the first extension plate 110 to penetrate through the second sleeve 200, the second extension plate 210 penetrates through the first sleeve 100, the length of the tibial intramedullary nail is adjusted by adjusting the length of the first extension plate 110 penetrating through the second sleeve 200 and the length of the second extension plate 210 penetrating through the first sleeve 100, and the first sleeve 100 and the second extension plate 210 as well as the second sleeve 200 and the first extension plate 110 are positioned by means of the positioning piece to match with different fracture areas of the tibia.
Compared with the prior art, the tibial intramedullary nail provided by the invention has the advantages that the end, provided with the first extension plate 110, of the first sleeve 100 and the end, provided with the second extension plate 210, of the second sleeve 200 are oppositely arranged, the first extension plate 110 penetrates into the second sleeve 200 and the second extension plate 210 penetrates into the first sleeve 100 by moving the first sleeve 100 and the second sleeve 200, 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 200 so as to match different fracture areas, and the length adjustment and positioning of the tibial intramedullary nail can be completed by positioning the first sleeve 100, the second extension plate 210, the second sleeve 200 and the first extension plate 110 through the positioning piece. The length of the tibial intramedullary nail provided by the invention can be automatically adjusted and the tibial intramedullary nail can be positioned, different types of tibial intramedullary nails do not need to be selected according to different positions of tibial fractures, and the operation is simpler and more convenient.
Wherein, the part a in fig. 1 and fig. 2 is a tibia fracture area. The first sleeve 100 and the second sleeve 200 are both cylindrical sleeves, the length of the first extending plate 110 is two times or more of the length of the first sleeve 100, and the length of the second extending plate 210 is two times or more of the length of the second sleeve 200, so that the tibial intramedullary nail provided by the invention has a larger adjustable range and stronger adaptability.
Referring to fig. 1 and 2, the positioning member includes two fastening nails 300, and the two fastening nails 300 are disposed between the first extending plate 110 and the second extending plate 210 and are respectively disposed near the end of the first sleeve 100 and near the end of the second sleeve 200.
In this embodiment, the two fastening nails 300 are screws, and the two fastening nails 300 penetrate through the first extension plate 110 and the second extension plate 210 and are fastened to the tibia to keep them stable. The fastening nail 300 presses the first extension board 110 and the second extension board 210 by means of the external profile of the fastening nail, the free end of the first extension board 110 is pressed on the second sleeve 200, and the free end of the second extension board 210 is pressed on the first sleeve 100, so that the first extension board 110 is prevented from falling out of the second sleeve 200, and the second extension board 210 is prevented from falling out of the second sleeve 200.
Referring to fig. 3, as an embodiment of the tibial intramedullary nail of the present invention, the fastening nail 300 is a tapered nail having a diameter at its end smaller than the distance between the first extension plate 110 and the second extension plate 210 and a diameter at its root larger than the distance between the first extension plate 110 and the second extension plate 210.
In this embodiment, the tapered nail not only can make things convenient for itself to fix on the shin bone. Similarly, since the diameter of the end of the tapered nail is smaller than the distance between the first extension board 110 and the second extension board 210, and the diameter of the root of the tapered nail is larger than the distance between the first extension board 110 and the second extension board 210, the tapered nail can smoothly enter the gap between the first extension board 110 and the second extension board 210, and continuously drill into the tibia through the tapered nail, so that the diameter of the tapered nail part between the first extension board 110 and the second extension board 210 is gradually increased, and finally the effect of simultaneously pressing the first extension board 110 and the second extension board 210 is achieved, so as to ensure the relative stability of the first extension board 110 and the second extension board 210.
As a specific embodiment of the tibial intramedullary nail provided by the present invention, the first extension plate 110 and the second extension plate 210 are both rigid elastic pieces.
In this embodiment, the rigid elastic sheet has certain elasticity and certain rigidity concurrently, the rigidity that depends on the first extending plate 110 and the second extending plate 210 can provide the supporting force of the fracture of the tibia, the elasticity that depends on the first extending plate 110 and the second extending plate 210 can make the first extending plate 110 that penetrates the second sleeve 200, and the second extending plate 210 that penetrates the first sleeve 100 has better stability.
Referring to fig. 4 and 5, as an embodiment of the tibial intramedullary nail provided by the present invention, the inner sidewall of the first sleeve 100 and/or the outer sidewall of the second extending plate 210 are provided with a first damping layer 120.
In this embodiment, the first damping layer 120 is disposed on the inner sidewall of the first sleeve 100, or on the outer sidewall of the second extension plate 210, or on both the inner sidewall of the first sleeve 100 and the outer sidewall 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.
Optionally, the first damping layer 120 may be a tooth-shaped structure or a bump structure, and may be in two-to-two abutting fit, or may be in any one of two-to-one fit with a smooth surface, so as to improve the friction between the outer wall of the second extending plate 210 and the inner wall of the first sleeve 100.
Referring to fig. 4 and 5, as an embodiment of the tibial intramedullary nail provided by the present invention, the inner sidewall of the second sleeve 200 and/or the outer sidewall of the first extending plate 110 are provided with a second damping layer 220.
In this embodiment, the second damping layer 220 is disposed on the inner sidewall of the second sleeve 200, or on the outer sidewall of the first extension plate 110, or on both the inner sidewall of the second sleeve 200 and the outer sidewall 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.
Optionally, the second damping layer 220 may be a tooth-shaped structure or a bump structure, and may be abutted and matched with each other, or may be matched with the smooth surface in any manner, so as to improve the friction between the outer wall of the first extending 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 expansion plate 110.
In this embodiment, the integrally formed first sleeve 100 and the first extending plate 110 can improve the structural strength of the two, and ensure the stability of the connection of the tibia fracture region.
As an embodiment of the tibial intramedullary nail provided by the present invention, the second sleeve 200 is integrally formed with the second expansion plate 210.
In this embodiment, the integrally formed second sleeve 200 and the second extending plate 210 can improve the structural strength of the two, and ensure the stability of the connection of the tibia fracture region.
Referring to fig. 1, as an embodiment of the tibial intramedullary nail provided by the present invention, the end of the first sleeve 100 away from the first expansion plate 110 and the end of the second sleeve 200 away from the second expansion plate 210 are both provided with a closed tapered end 400.
In this embodiment, the tapered end 400 facilitates penetration of the first cannula 100 and the second cannula 200 into the tibia, and the closed configuration reduces bone marrow penetration into the first cannula 100 and the second cannula 200. Similarly, the closed ends are disposed at the ends 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 stress in an operating state.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
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 at 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, for inserting the first spreader plate into the second sleeve and the second spreader plate into the first sleeve, by adjusting 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, the length of the tibia intramedullary nail is adjusted, and the first sleeve and the second extension plate and the second sleeve and the first extension plate are positioned by the positioning piece so as to match regions of different tibia fractures.
2. A tibial intramedullary nail according to claim 1, wherein said positioning member comprises two fastening nails, both of said fastening nails being located between said first and second extension plates and respectively located near an end of said first sleeve and near an end of said second sleeve.
3. The tibial intramedullary nail of claim 2, wherein said fastening nail is a tapered nail having a tip diameter less than a spacing between said first and second expansion plates and a root diameter greater than a spacing between said first and second expansion plates.
4. A tibial intramedullary nail according to any one of claims 1 to 3, wherein the first and second extension plates are both rigid blades.
5. A tibial intramedullary nail according to claim 4, wherein the inner lateral wall of the first sleeve and/or the outer lateral wall of the second expansion plate is provided with a first damping layer.
6. A tibial intramedullary nail according to claim 4, wherein the inner lateral wall of the second sleeve and/or the outer lateral wall of the first expansion plate is provided with a second damping layer.
7. A tibial intramedullary nail according to any one of claims 1 to 3, wherein the first sleeve is integrally formed with the first extension plate.
8. A tibial intramedullary nail according to any one of claims 1 to 3, wherein the second sleeve is integrally formed with the second extension plate.
9. A tibial intramedullary nail according to any one of claims 1 to 3, wherein the end of the first sleeve distal to the first expansion plate and the end of the second sleeve distal to the second expansion plate are provided with a closed conical 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 true CN113974809A (en) | 2022-01-28 |
| CN113974809B 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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| CN205947846U (en) * | 2016-06-30 | 2017-02-15 | 常州好利医疗科技有限公司 | Extender in rotary -type limbs marrow of machinery |
| CN108210043A (en) * | 2016-12-15 | 2018-06-29 | 天津市康尔医疗器械有限公司 | A kind of novel thighbone cross locking marrow nail |
| CN207041574U (en) * | 2017-03-01 | 2018-02-27 | 黔南布依族苗族自治州人民医院 | A kind of length-adjustable type thread bone nail |
| CN207532435U (en) * | 2017-03-24 | 2018-06-26 | 华骨科技股份有限公司 | Bone support device |
| CN208741113U (en) * | 2017-07-27 | 2019-04-16 | 焦作市新港医疗设备有限公司 | A kind of shin bone/humeral intramedullary nail |
| CN107616830A (en) * | 2017-10-31 | 2018-01-23 | 成都融创智谷科技有限公司 | A kind of extension intramedullary needle for reducing pin hole |
| CN209347198U (en) * | 2018-05-10 | 2019-09-06 | 大博医疗科技股份有限公司 | Minimally invasive pedicle screw |
| 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 |
| WO2020187463A1 (en) * | 2019-03-15 | 2020-09-24 | Augustin Betz | Connecting device for connecting two bone parts |
| CN110151288A (en) * | 2019-06-25 | 2019-08-23 | 重庆医科大学附属永川医院 | Shin bone, femur, the telescopic intramedullary nail of humerus Limb lengthening |
| CN211862944U (en) * | 2019-09-16 | 2020-11-06 | 北京贝思达生物技术有限公司 | Intramedullary pin |
| CN111134823A (en) * | 2020-01-14 | 2020-05-12 | 虞佩 | Adjustable intramedullary nail |
| WO2021242211A1 (en) * | 2020-05-28 | 2021-12-02 | Андрей Николаевич КОВАЛЕВ | Telescopic intramedullary fixation device (variants) |
| 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 |
| CN112932641A (en) * | 2021-01-25 | 2021-06-11 | 河北医科大学第三医院 | Tibia intramedullary nail |
| 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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