CN110974383A - Femoral intramedullary nail device - Google Patents
Femoral intramedullary nail device Download PDFInfo
- Publication number
- CN110974383A CN110974383A CN201911258350.7A CN201911258350A CN110974383A CN 110974383 A CN110974383 A CN 110974383A CN 201911258350 A CN201911258350 A CN 201911258350A CN 110974383 A CN110974383 A CN 110974383A
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- China
- Prior art keywords
- nail
- head
- proximal
- stud
- distal
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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
-
- 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
Abstract
The invention discloses a femoral intramedullary nail device, which comprises: a main nail, a proximal end stud and a distal end stud; the shape of the main nail is matched with the anatomical angle of the marrow cavity; the main nail rod is hollow and cylindrical; the near end of the main nail rod is provided with two near end nail holes which are parallel to each other and form a certain angle with the main nail rod, and the near end nail holes are used for being matched with the near end head nails; the far end of the main nail rod is provided with at least one far end nail hole which is used for being matched with the far end head nail. The femoral intramedullary nail device provided by the invention can effectively solve the problems that the rotation of the fracture end is unstable and the intramedullary nail is cut out from the femoral head, and effectively prevent the fracture end from separating during and after the operation; the fracture end can achieve the effect of continuous pressurization in the operation and after the operation, thereby promoting the fracture healing; and the structure is simple, and the operation is convenient.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of medical instruments, in particular to a femoral intramedullary nail device.
[ background of the invention ]
Due to the functional and anatomical characteristics of the femur, the fracture part often bears larger torsional force and shearing force, and the fracture and the stability after reduction are influenced, so that the internal fixation effect is influenced, and the non-healing rate is higher than that of other fractures. Due to the particularity of femoral head blood supply, the blood supply source is easy to block during fracture, the fracture healing is affected, and complications such as ischemic necrosis and collapse of femoral head are caused.
When a fracture occurs at the metaphysis of the femur, the fractured bone is usually fixed using an internal fixation method, among which an intramedullary nail is used.
The currently common femoral intramedullary nail mainly consists of three parts, namely: the intramedullary nail comprises a lag screw arranged in a femoral head, an intramedullary nail main nail arranged in a femoral medullary cavity and a distal locking nail matched with the intramedullary nail main nail for distal end fixation. The intramedullary nail is generally used for reduction and fixation of intertrochanteric and infratrochanteric fractures. However, due to design defects, the currently used femoral intramedullary nail often causes rotation or separation displacement of a fracture end in and after an operation, and further causes the problems of unstable fixation of the broken end, cutting of a head nail from the femoral head and the like. Once a problem occurs, a secondary operation is often required. This not only brings pain to the patient, but also wastes medical resources.
Therefore, there is an urgent need for a femoral intramedullary nail device that can achieve stable fixation of a fractured end of a femur, good healing after a surgery, simple structure and convenient operation.
[ summary of the invention ]
The application provides an intramedullary nail device, which can solve the problems of loosening of a fracture fixing end and internal fixation cutting existing in the prior art.
In one aspect of the present application, an intramedullary nail device is provided, comprising: the main nail, the near-end head nail and the far-end locking nail;
the shape of the main nail is matched with the anatomical angle of the marrow cavity;
the main nail rod is hollow and cylindrical;
the near end of the main nail rod is provided with two near end nail holes which are parallel to each other and form a certain angle with the main nail rod, and the near end nail holes are used for being matched with the near end head nails;
the far end of the main nail rod is provided with at least one far end nail hole which is used for being matched with the far end locking nail.
According to a specific embodiment of the present application, the distal nail hole is a figure-8 nail hole formed by overlapping a locking hole and a normal hole;
the locking hole is provided with a thread.
According to another particular embodiment of the present application, the proximal stud comprises: a proximal stud sleeve rod and a proximal stud body;
the near-end stud sleeve rod is in threaded connection with the near-end stud body.
According to yet another embodiment of the present application, the proximal stud body is composed of a proximal stud body stud, a proximal stud body shank, and a proximal stud body tail, which are connected in sequence;
the nail head of the near-end nail body is of a spiral knife structure;
an external thread structure is arranged outside the nail rod of the near-end head nail body;
the nail tail of the near-end head nail body is of an inner hexagonal structure.
According to yet another embodiment of the present application, the proximal nail stem is comprised of a proximal nail stem body and a proximal nail stem tail;
the outer diameter of the tail part of the near-end nail sleeve rod is larger than that of the near-end nail sleeve rod body.
According to yet another embodiment of the present application, the proximal tack shank is a hollow cylindrical structure;
the inside of near-end stud loop bar body is provided with internal thread structure, internal thread structure with the external thread structure phase-match of near-end stud body nail pole.
According to another embodiment of the present application, the tail of the proximal nail stem is provided with an inner hexagonal groove.
According to yet another embodiment of the present application, the distal head nail is a distal locking head nail;
the distal locking stud includes: a distal locking nail head, a distal locking nail stem and a distal locking nail tail.
According to yet another embodiment of the present application,
the far-end locking nail head is a self-tapping screw;
the far-end locking nail rod is provided with an external thread structure; the external thread is matched with the locking hole;
and an inner hexagonal groove is formed in the nail tail of the far-end locking head nail.
According to yet another embodiment of the present application, the distal end of the main nail shank is provided with at least three equally spaced distal nail holes.
Based on the introduction, in the technical scheme of the invention, the proximal end nail of the femoral intramedullary nail device can realize the change of the length of the proximal end nail through the combined structure of the proximal end nail body and the proximal end nail sleeve rod, and can be combined with the main nail to generate sliding so as to realize more length changes, thereby effectively solving the problem that the traditional intramedullary nail device needs to measure the length of the proximal end nail in the operation; and is capable of achieving self-locking while achieving a change in length. In the practical application process, the near-end head nail with the adjustable length can better meet the requirement of accurate length for fracture fixation, and meanwhile, the continuous determined sliding pressurization can be formed at the fixation position, so that the healing of the fracture part is facilitated.
The femoral intramedullary nail device provided by the invention can firmly fix the fracture end, effectively realize the fracture end pressurization in the operation and after the operation, and reduce the phenomena of loosening and fracture nonunion at the fracture part in the operation and after the operation. The two proximal end nails arranged in parallel can not only prevent the femoral head from rotating relative to the intramedullary nail and increase the fixing strength, but also can slide in parallel, increase the contact area and stress of the fracture end and accelerate the fracture healing. Two piece parallel arrangement's near-end head nails more effectively dispersed the head nail shear stress in the femoral head, effectively avoided the head nail that early heavy burden brought to cut out the risk. The specially designed distal nail hole can simultaneously meet two fixing modes of pressurization and locking support; not only can meet the requirement of intertrochanteric fracture, but also can meet the surgical treatment requirements of different fracture conditions such as complex dry femoral fracture, nonunion fracture and the like.
The femoral intramedullary nail device provided by the invention can fundamentally solve the problems that the rotation and separation of the fracture end are unstable, the nail of the proximal end head is cut out from the femoral head, the fracture end is displaced, the fracture is not healed and the like. The device also has the advantages of simple structure, convenient operation, low cost and the like, and is easy to popularize and use on a large scale.
[ description of the drawings ]
Fig. 1 is a schematic structural view of an embodiment of a main nail of a femoral intramedullary nail device according to the present invention;
FIG. 2 is a schematic structural view of an embodiment of a proximal head nail of a femoral intramedullary nail device in accordance with the present invention;
FIG. 3 is a schematic structural view of an embodiment of a femoral intramedullary nail device in accordance with the present invention;
FIG. 4 is a schematic structural view of another embodiment of a femoral intramedullary nail device in accordance with the present invention;
the same or similar reference numbers in the drawings identify the same or similar elements.
The reference numerals are as shown in the following table:
| 10 | |
||
| 11 | |
12 | Near- |
| 13 | Distal nailHole(s) | 14 | Main |
| 131 | |
132 | |
| 20 | Near- |
||
| 21 | Near-end |
211 | Near-end nail |
| 212 | Near-end nail sleeve |
22 | Near- |
| 221 | Near-end head nail |
222 | Nail rod of near-end |
| 223 | Nail tail of near-end |
||
| 30 | |
||
| 301 | Distal |
302 | Distal |
| 303 | Distal locking nail tail |
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
Referring to fig. 1 to 4, the present invention provides a femoral intramedullary nail device, including: a main nail 10, a proximal stud 20 and a distal locking nail 30.
The main nail 10 has a profile matching the anatomical angle of the medullary cavity. In practice, the main nail 10 needs to be placed in the medullary cavity. Therefore, it is preferable that the distal end of the main nail 10 is not in the same line with the proximal end of the main nail 10, but is disposed at an angle. More preferably, the angle between the two is 4 ° to 7 °. Preferably, the tail of the main nail 10 is provided with a main nail tail cap 14. The main nail tail cap 14 is used for sealing the tail of the main nail 10 to prevent foreign matters from entering the inside of the main nail 10.
The main nail shank 11 is hollow cylindrical. The near end of the main nail rod 11 is provided with two near end nail holes 12 which are parallel to each other and form a certain angle with the main nail rod 11, and the included angle between the main nail rod 11 and the near end nail holes 12 is preferably 125-130 degrees, preferably 130 degrees, and is used for matching with the near end head nail 20. It will be appreciated that for better fixation and prevention of displacement of the fractured ends, the two proximal nail holes 12 are arranged up and down along the femoral shaft. The proximal stud 20 extends through the proximal stud hole 12. Preferably, the proximal nail hole 12 is a positive sliding hole.
Two near-end head nails 20 of parallel arrangement can realize the stable fixed to the fracture end, avoid appearing the rotatory problem of fracture end. Furthermore, the double nail structure has 60% higher fixing strength than the single nail structure in the same material. Although the effect of preventing rotation can be achieved by arranging a plurality of near-end studs, experiments show that the effect of preventing rotation and the fixing strength and the like which are more obvious than those of arranging two near-end studs cannot be achieved by arranging more near-end studs. Thus, the present invention preferably employs two proximal head nails 20 arranged in parallel to fix the fracture end, taking into account the structural features of the femoral head, the cost of the intramedullary nail device, and the complexity of operation.
The proximal stud 20 comprises: a proximal stud stem 21 and a proximal stud body 22. The near-end stud sleeve rod 21 is in threaded connection with the near-end stud body 22.
The near-end stud body 22 is composed of a near-end stud body stud 221, a near-end stud body stud rod 222 and a near-end stud body stud tail 223 which are connected in sequence. The proximal stud body 22 is a hollow, long rod structure.
The near-end stud body stud 221 is of a spiral knife structure. During the implantation procedure, the proximal nail body head 221 of the helical blade structure may be screwed back and forth along the bony passage for adjustment of position.
The outside of the near-end stud body stud rod 222 is provided with an external thread structure, and the external thread structure is matched with an internal thread structure arranged inside the near-end stud sleeve rod body 211. When in use, the two can be screwed by a thread structure.
The nail tail 223 of the near-end head nail body is of an inner hexagonal structure, so that the hexagonal screwdriver can operate conveniently.
The near-end stud stem 21 is composed of a near-end stud stem body 211 and a near-end stud stem tail 212. The near-end stud loop bar 21 is of a hollow cylindrical structure, so that the near-end stud loop bar is connected with the near-end stud body 22 conveniently.
Preferably, the outer diameter of the proximal nail stem tail 212 is larger than the outer diameter of the proximal nail stem body 211. Meanwhile, the outer diameter of the tail 212 of the proximal nail stem is larger than the diameter of the proximal nail hole 21. In the actual operation process, after implanting near-end head nail 20, the slightly bigger external diameter near-end head nail loop bar afterbody 212 can block on the near-end outside cortex of thighbone, not only prevents effectively that near-end head nail 20 from entering into the inside of the thighbone neck, and then causes the fixed failure of fracture reduction. And when the head nail 21 is rotated, the head nails 21-22 in the femoral head can be effectively shortened, and the aim of pressurizing the fractured end of the bone in the operation is fulfilled.
In order to facilitate the operation of the hexagonal screwdriver, the tail part 212 of the near-end nail sleeve rod is provided with an inner hexagonal groove. Preferably, the near-end nail stem 21 further comprises a stem tail cap (not shown in the figure), and the stem tail cap is disposed at the near-end nail stem tail 212 for sealing the near-end nail stem 21 and preventing the foreign matter from entering.
The distal end of the main nail rod 11 is provided with at least one distal nail hole 13. The distal nail hole 13 is used for matching with the distal locking nail 30. The distal stud 30 extends through the distal stud hole 13. Preferably, the distal end of the main nail shaft 11 is provided with at least three distal nail holes 13 arranged at equal intervals. During the specific operation, the required distal nail hole 13 can be selected for fixation according to the actual requirement.
Preferably, the distal nail hole 13 is a figure-8 nail hole formed by overlapping the locking hole 131 and the normal hole 132. Wherein, a thread is arranged in the locking hole 131. The specially designed 8-shaped nail hole can realize two fixing modes of pressurization and locking support so as to meet the operation requirements of different fracture conditions, and the application range is wider.
In cooperation with the distal nail hole 13, the distal stud 30 includes: the far-end thread locking nail and the far-end common locking nail have two structures. The distal common staple may be selected as desired by one skilled in the art.
The distal locking nail comprises: a distal locking head 301, a distal locking head stem 302 and a distal locking tail 303. The distal locking head nail head 301 is a self-tapping screw. The distal locking nail rod 302 is provided with an external thread structure which is matched with the locking hole 131.
The inside of distal end locking head nail tail 303 is provided with interior hexagonal recess, the hexagonal screwdriver operation of being convenient for.
The specific operation of the femoral intramedullary nail device provided by the invention is as follows:
firstly, the main nail rod 11 of a main nail 10 of an intramedullary nail is placed at a required position at the proximal end of the femur. Then, holes are drilled in the lateral cortex of the proximal end of the femur under the guidance of the guide, and the proximal stud body 22 with proper position and length and the proximal stud sleeve rod 21 matched with the proximal stud body are implanted. The near-end head nail sleeve rod 21 is rotated, the distance between the near-end head nail sleeve rod 21 and the near-end head nail body 22 is shortened by means of the external thread of the near-end head nail body nail rod 222, then the spiral cutter head of the near-end head nail body nail head 221 is pulled out towards the outer side of the femur in parallel, the distance between two broken ends of the fracture part is shortened, and the purpose of pressurizing the fracture end is achieved. At the same time, the above operation can form a length self-locking of the proximal end stud 20, achieving the effect of continuously and stably pressurizing the fracture end. Thereafter, a second proximal stud 20 is screwed in accordance with the above-described operation. It should be noted that in order to ensure the best fixation, the two proximal studs 20 must be kept parallel and the two proximal studs 20 are in the same plane as the coronal plane of the femoral neck.
After the fractured end is fixed, the near-end nail sleeve rod 21 can be closely matched with the near-end nail hole 12 on the main nail rod 11 to form support, and the parallel sliding of the near-end nail body 21 in the nail channel can be kept, so that the fractured end can be continuously pressurized under the pressure of the head end of the femur, and the healing of the fractured end is promoted. In addition, because the tail part 212 of the near-end head nail sleeve rod with slightly larger outer diameter can be clamped on the femoral neck, the near-end head nail 20 can be effectively prevented from entering the femoral neck, and the fracture reduction and fixation failure is further caused.
In the prior art, in order to match the shapes of femoral heads and necks with different lengths, proximal head nails with a plurality of specifications need to be produced, and the specification difference values of manufacturers at home and abroad are all 0.5cm according to the knowledge of the current literature, so that the accurate requirement of the length of the head nail in the operation of each patient cannot be completely met. The proximal head nail is too long, so that the problems that the head end of the femur penetrates out or the tail end of the head nail rubs and extrudes soft tissues often occur, the operation fails, the pain of a patient is increased, and the like; the near-end head nail is short excessively, and head end pressure is excessively concentrated, easily causes the thighbone head end to cut out, and fixed stability is poor, leads to the operation failure, and in senile osteoporosis's patient, the shearing stress of dispersion head nail that suitable nail length can be better increases the fixed intensity of fracture, and the earlier rehabilitation exercise of bearing a burden of carrying on of the postoperative of being convenient for promotes comprehensive recovery, and therefore accurate nail length selection is more critical. The proximal nail sleeve 21 and the proximal nail body 22 of the femoral intramedullary nail device provided by the invention are combined for use, so that the length of the proximal nail 20 can be adjusted within the range of 0.1-1.5 cm according to requirements. Completely meets the accurate requirement of the head nail length in the operation and the early-stage load requirement after the operation.
Further, distal locking pin 30 is threaded. The distal nail hole 13 provided in the main nail 10 of the present invention includes two forms of the locking hole 131 and the normal hole 132, and the user can select different distal nails 30 according to different fracture conditions and implant them into the matched distal nail holes 13 to realize two support fixing modes of pressurization or locking. Referring to fig. 3 and 4, the distal locking pin 30 is taken as an example of a locking pin to lock and support the femur. In order to increase the fixing strength and make the stress point more uniform, it is preferable to perform distal fixing using three distal nails 30 arranged at equal intervals.
The invention discloses a femoral intramedullary nail device which comprises a main nail, a near-end head nail and a far-end locking nail, wherein all the parts are mutually matched and supplement each other. The invention can effectively solve the problems that the rotation of the fracture end is unstable and the intramedullary nail is cut out from the femoral head; the purpose of continuously pressurizing the fracture end in and after the operation can be achieved; can effectively prevent the fracture end from separating during and after the operation and promote the fracture to heal quickly; simple structure, convenient operation and low cost.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A femoral intramedullary nail device, comprising: a main nail, a proximal end stud and a distal end stud;
the shape of the main nail is matched with the anatomical angle of the marrow cavity;
the main nail rod is hollow and cylindrical;
the near end of the main nail rod is provided with two near end nail holes which are parallel to each other and form a certain angle with the main nail rod, and the near end nail holes are used for being matched with the near end head nails;
the far end of the main nail rod is provided with at least one far end nail hole which is used for being matched with the far end head nail.
2. The femoral intramedullary nail device of claim 1, wherein the distal nail hole is a figure-8 nail hole formed by overlapping a locking hole and a normal hole;
the locking hole is provided with a thread.
3. The femoral intramedullary nail device of claim 1, wherein the proximal head nail comprises: a proximal stud sleeve rod and a proximal stud body;
the near-end stud sleeve rod is in threaded connection with the near-end stud body.
4. The femoral intramedullary nail device of claim 3, wherein the proximal nail body is comprised of a proximal nail body head, a proximal nail body shank, and a proximal nail body tail in sequential connection;
the nail head of the near-end nail body is of a spiral knife structure;
an external thread structure is arranged outside the nail rod of the near-end head nail body;
the nail tail of the near-end head nail body is of an inner hexagonal structure.
5. The femoral intramedullary nail device of claim 4, wherein the proximal head nail stem is comprised of a proximal head nail stem body and a proximal head nail stem tail;
the outer diameter of the tail part of the near-end nail sleeve rod is larger than that of the near-end nail sleeve rod body.
6. The femoral intramedullary nail device of claim 5, wherein the proximal head pin stem is a hollow cylindrical structure;
the inside of near-end stud loop bar body is provided with internal thread structure, internal thread structure with the external thread structure phase-match of near-end stud body nail pole.
7. The femoral intramedullary nail device of claim 5, wherein the proximal head pin stem tail is provided with a hexagonal socket.
8. The femoral intramedullary nail device of claim 2, wherein the distal head nail is a distal locking head nail;
the distal locking stud includes: the nail head of the distal locking head nail, the nail rod of the distal locking head nail and the nail tail of the distal locking head nail.
9. The femoral intramedullary nail device of claim 8,
the nail head of the far-end locking head is a self-tapping screw;
the far-end locking nail rod is provided with an external thread structure; the external thread structure of the far-end locking nail rod is matched with the locking hole;
and an inner hexagonal groove is formed in the nail tail of the far-end locking head nail.
10. The intramedullary nail device of claim 1, wherein the distal end of the main nail shank is provided with at least three equally spaced distal nail holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258350.7A CN110974383A (en) | 2019-12-10 | 2019-12-10 | Femoral intramedullary nail device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258350.7A CN110974383A (en) | 2019-12-10 | 2019-12-10 | Femoral intramedullary nail device |
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| CN110974383A true CN110974383A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911258350.7A Pending CN110974383A (en) | 2019-12-10 | 2019-12-10 | Femoral intramedullary nail device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113558738A (en) * | 2021-06-04 | 2021-10-29 | 北京达芬奇视界医疗科技发展有限公司 | Multifunctional positioning and guiding device for orthopedic surgery |
| WO2021251935A1 (en) * | 2020-06-08 | 2021-12-16 | Acibadem Mehmet Ali Aydinlar Universitesi | An orthopedic implant |
| CN115399859A (en) * | 2022-08-31 | 2022-11-29 | 天津科技大学 | Femoral screw based on orthogonal test |
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| US5498265A (en) * | 1991-03-05 | 1996-03-12 | Howmedica Inc. | Screw and driver |
| US20070100343A1 (en) * | 2003-05-17 | 2007-05-03 | Cole Dean J | Intramedullary nail assembly |
| EP1615571B1 (en) * | 2003-04-09 | 2010-10-20 | Synthes GmbH | Intramedullary nail for femur fracture fixation |
| CN204379417U (en) * | 2014-12-16 | 2015-06-10 | 李忠民 | Universal dynamical pressing type is strengthened preventing revolving intramedullary pin |
| CN105395244A (en) * | 2015-11-23 | 2016-03-16 | 赵文 | Femoral intramedullary nail device |
| CN207024106U (en) * | 2017-02-09 | 2018-02-23 | 嘉兴市第二医院 | A kind of inner fixing device for fracture of neck of femur |
-
2019
- 2019-12-10 CN CN201911258350.7A patent/CN110974383A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5498265A (en) * | 1991-03-05 | 1996-03-12 | Howmedica Inc. | Screw and driver |
| EP1615571B1 (en) * | 2003-04-09 | 2010-10-20 | Synthes GmbH | Intramedullary nail for femur fracture fixation |
| US20070100343A1 (en) * | 2003-05-17 | 2007-05-03 | Cole Dean J | Intramedullary nail assembly |
| CN204379417U (en) * | 2014-12-16 | 2015-06-10 | 李忠民 | Universal dynamical pressing type is strengthened preventing revolving intramedullary pin |
| CN105395244A (en) * | 2015-11-23 | 2016-03-16 | 赵文 | Femoral intramedullary nail device |
| CN207024106U (en) * | 2017-02-09 | 2018-02-23 | 嘉兴市第二医院 | A kind of inner fixing device for fracture of neck of femur |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021251935A1 (en) * | 2020-06-08 | 2021-12-16 | Acibadem Mehmet Ali Aydinlar Universitesi | An orthopedic implant |
| CN113558738A (en) * | 2021-06-04 | 2021-10-29 | 北京达芬奇视界医疗科技发展有限公司 | Multifunctional positioning and guiding device for orthopedic surgery |
| CN113558738B (en) * | 2021-06-04 | 2024-01-26 | 北京达芬奇视界医疗科技发展有限公司 | Multifunctional positioning and guiding device for orthopedic operation |
| CN115399859A (en) * | 2022-08-31 | 2022-11-29 | 天津科技大学 | Femoral screw based on orthogonal test |
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Application publication date: 20200410 |
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