CN211325498U - Combined internal fixing device for treating proximal femoral bone diseases - Google Patents
Combined internal fixing device for treating proximal femoral bone diseases Download PDFInfo
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- CN211325498U CN211325498U CN201921772682.2U CN201921772682U CN211325498U CN 211325498 U CN211325498 U CN 211325498U CN 201921772682 U CN201921772682 U CN 201921772682U CN 211325498 U CN211325498 U CN 211325498U
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- locking
- nail
- steel plate
- fixation device
- internal fixation
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Abstract
The utility model discloses a combined internal fixation device for treating proximal femoral bone diseases, which comprises an intramedullary nail (1) arranged in a medullary cavity of a human body and a locking screw (3) used for fixing a locking steel plate (2) on the surface of a skeleton; the intramedullary nail (1) comprises a main nail (1-2) with a tail plug (1-1) in threaded connection, a proximal spiral blade (1-3) for being implanted into a bone through a locking steel plate (2) and a locking hole of the main nail (1-2), and a distal locking nail (1-4) for being implanted into the bone through a distal locking hole (1-2-3) of the main nail (1-2); the distal ends of the main nails (1-2) are forked in a crisscross manner. The utility model adopts the combination of intramedullary nail and compression steel plate, thereby effectively treating bone diseases such as proximal femur, femoral neck, tuberosity and proximal femur outside cortex fracture and reducing the possibility of postoperative related complications.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a combination internal fixation device of treatment thighbone near-end osteopathia.
Background
At present, the orthopedic treatment of proximal femoral fracture uses endophytes as main means, the endophytes are mainly metal bone fracture plates, spherical pressurizing holes, locking threaded holes or dynamic pressurizing and locking threaded combination holes are arranged on the bone fracture plates, and fracture parts are fixed through bone screws in different forms, so that the purpose of treating the fracture bone disease is achieved.
Among them, the dynamic compression bone fracture plate and the compression screw are placed to complete the axial compression of the fracture area to form strong internal fixation, and when the fracture is healed, the products have no callus formation, which may cause infection, nonunion and delayed union of the fracture.
The locking bone fracture plate is provided with a locking threaded hole, threads are of a double-thread structure, a relatively stable bridging internal fixation is formed through a locking screw, secondary bone healing accompanied with callus formation can be generated, the product cannot pressurize the fracture broken end, the strong bone fracture plate, the strong screw and the fracture section are separated, and the three parts are combined to cause bone nonunion and extraction and nail breakage of a locking system under the action of stress.
The locking compression bone plate can be used as the dynamic compression bone plate only, can also be used as an inner bracket through a locking screw, or is combined by the two modes. The plants in the bone fracture plate are fixed by tension sides, so that stress shielding is easy to occur, fatigue fracture is generated, and the failure of the plants is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a combination internal fixation device for treating proximal femoral bone diseases aiming at the technical defects in the prior art.
For realizing the utility model discloses a technical scheme that the purpose adopted is:
a combination internal fixation device for treating proximal femoral bone disease, comprising:
the intramedullary nail (1) is arranged in a medullary cavity of a human body, and the locking screw (3) is used for fixing the locking steel plate (2) on the surface of a bone; the intramedullary nail (1) comprises a main nail (1-2) with a tail plug (1-1) in threaded connection, a proximal spiral blade (1-3) for being implanted into a bone through a locking steel plate (2) and a locking hole of the main nail (1-2), and a distal locking nail (1-4) for being implanted into the bone through a distal locking hole (1-2-3) of the main nail (1-2); the distal ends of the main nails (1-2) are forked in a crisscross manner.
Preferably, the main nail (1-2) is of a hollow structure, the near end of the main nail is provided with a spindle-shaped locking hole (1-2-2) matched with the spiral blade (1-3) for use, and the tail of the main nail is of a threaded structure and is matched with the external thread of the tail plug (1-1).
Preferably, the locking steel plate (2) has a screw blade insertion hole (2-3) for fitting the screw blade (1-3), and a head locking hole (2-1) and a shank locking hole (2-4) for fitting the locking screw (3).
Preferably, the number of the head locking holes (2-1) is three, and the head locking holes are arranged in a triangular shape; the cadre locking holes (2-4) are a plurality of and are arranged in a straight line or in a left-right offset mode at intervals.
Preferably, the head of the locking steel plate (2) is provided with two bandage holes for realizing the reinforced fixation between the locking steel plate (2) and the bone by using bandages.
Preferably, the proximal helical blade (1-3) is hollow and the head is a helical blade type structure.
Preferably, the head of the locking screw (3) is in a straight thread or taper thread structure matched with a head locking hole (2-1) and a dry part locking hole (2-4) on the locking steel plate (2), the dry part is in a straight thread structure, and the distal head is in a self-tapping structure.
Preferably, the transmission structure of the locking screw (3) is a hexagon socket or a hexagon socket flower-shaped structure.
Preferably, the transmission structure of the tail plug (1-1) is an inner hexagonal structure or an inner hexagonal flower type structure.
Preferably, the thread structure of the distal locking nail (1-4) is a shallow thread.
The utility model adopts the combination of intramedullary nail and compression steel plate, thereby effectively treating bone diseases such as proximal femur, femoral neck, tuberosity and proximal femur outside cortex fracture and reducing the possibility of postoperative related complications.
Drawings
Fig. 1 is a schematic view of the fixation of the combined internal fixation device for treating proximal femoral bone diseases of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIGS. 3-4 are schematic views of a front view of the tail plug and a drive portion, respectively;
FIG. 5 is a schematic view of a locking plate;
6-9 are schematic views of a locking screw and a drive portion;
FIG. 10 is a schematic structural view of the main nail;
FIG. 11 is a cross-sectional view taken along line A-A of FIG. 10;
FIG. 12 is a schematic view of a proximal helical blade;
fig. 13 shows the distal end of the distal locking pin.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific 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.
As shown in figures 1-13, the combined internal fixation device for treating proximal femoral bone disease of the present invention comprises an intramedullary nail (1) for placing inside the medullary cavity of human body, a locking screw (3) for fixing a locking steel plate (2) on the surface of bone; the intramedullary nail (1) comprises a main nail (1-2) with a threaded tail plug (1-1), a proximal spiral blade (1-3) for penetrating through a locking steel plate (2) and a locking hole of the main nail (1-2) to be implanted into a bone, and a distal locking nail (1-4) for penetrating through a distal locking hole (1-2-3) of the main nail (1-2) to be implanted into the bone; the far end of the main nail (1-2) is in a cross-shaped bifurcation structure (1-2-4).
The intramedullary nail (1) of the utility model is combined with the locking steel plate (2) and the locking screw (3) to be used, so as to achieve the purpose of combining and fixing the intramedullary nail and the eccentric nail and treating the fracture of the outer cortex of the proximal femur, the neck of the femur, the tuberosity and the proximal femur.
Preferably, in the utility model, the main nail (1-2) is a hollow structure, the near end is provided with a spindle-shaped locking nail (1-2-2) which is matched with the spiral blade (1-3) for use, and the tail part is provided with a thread (1-2-1) structure which is matched with the external thread (1-1-1) on the tail plug (1-1).
Preferably, in the present invention, the locking steel plate (2) has a spiral blade insertion hole (2-3) of a nearly circular shape to be engaged with the spiral blade (1-3), and a head locking hole (2-1) and a trunk locking hole (2-4) to be engaged with the locking screw (3). The stem locking hole (2-4) of the locking steel plate (2) can be designed by adopting the existing taper thread locking hole, and the head locking hole (2-1) can be designed by adopting the existing taper thread locking hole, which is a known technology and is not shown and described in detail.
Preferably, in the utility model, the head locking holes (2-1) are three and arranged in a triangular shape, so as to increase the holding force of the locking screw (3); the dry part locking holes (2-4) are arranged in a straight line, as shown in figure 6; or may be offset left and right (not shown).
Preferably, in the utility model, the head of the locking steel plate (2) is provided with two tie holes (2-2), which are arranged between the head locking hole (2-1) and the spiral blade insertion hole (2-3) of the matched spiral blade (1-3) and can be circular holes for realizing the reinforced fixation between the locking steel plate (2) and the skeleton by the tie.
Preferably, in the utility model, the spiral blade (1-3) is a hollow structure, and the head is a spiral blade type structure (1-3-1), which is convenient for implantation.
Preferably, in the utility model, the head of the locking screw (3) is a taper thread (3-1) which is matched with the head locking hole (2-1) and the cadre locking hole (2-4) on the locking steel plate (2) for use, or a straight thread (not shown), the cadre is a straight thread structure (3-2), and the distal end head is a self-tapping structure (3-3) for convenient implantation and locking fixation.
Preferably, in the utility model, the transmission structure of the locking screw (3) is an inner hexagonal structure (3-4) or an inner hexagonal flower-shaped structure (3-5).
Preferably, in the utility model, the transmission structure of the tail plug (1-1) is an inner hexagonal structure (1-1-2) or an inner hexagonal flower type structure (1-1-3).
Preferably, in the utility model, the thread structure of the distal locking nail (1-4) is a shallow thread and is designed as a full thread.
When in use, a main nail (1-2) of an intramedullary nail is placed in a medullary cavity of a human body, a bone positioning needle is used for fixing a locking steel plate (2) on the surface of a reset bone, a bone drill is used for drilling a bottom hole through a spiral blade inserting hole (2-3) on the locking steel plate (2), a spindle-shaped locking hole (1-2-2) at the near end and a far end locking hole (1-2-3) on the main nail (1-2) of the intramedullary nail, a near end spiral blade (1-3) is implanted, a far end locking nail (1-4) is implanted, a tail plug (1-1) is screwed in to ensure that an external thread (1-1-1) on the tail plug is screwed with a thread (1-2-1) at the tail part of the main nail, and a bone drill and a locking sleeve are used for drilling a low hole on the bone through a head locking hole (2-1) and a trunk locking hole (2-4) on the locking steel plate (2, implanting a locking screw (3), enabling the taper thread (3-1) at the tail part of the locking screw to be screwed with the threads of the head locking hole (2-1) and the trunk locking hole (2-4) on the locking steel plate (2), and taking out the bone positioning needle, thus completing the implantation of the combined internal fixation device for treating the proximal bone disease of the femur and completing the operation.
The intramedullary nail (1) of the utility model is combined with the locking steel plate (2) and the locking screw (3) to be used, so as to achieve the purpose of combining and fixing the intramedullary nail and the eccentric nail and treating the fracture of the outer cortex of the proximal femur, the neck of the femur, the tuberosity and the proximal femur.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A combination internal fixation device for treating proximal femoral bone disease, comprising:
the intramedullary nail (1) is arranged in a medullary cavity of a human body, and the locking screw (3) is used for fixing the locking steel plate (2) on the surface of a bone; the intramedullary nail (1) comprises a main nail (1-2) with a tail plug (1-1) in threaded connection, a proximal spiral blade (1-3) for being implanted into a bone through a locking steel plate (2) and a locking hole of the main nail (1-2), and a distal locking nail (1-4) for being implanted into the bone through a distal locking hole (1-2-3) of the main nail (1-2); the distal ends of the main nails (1-2) are forked in a crisscross manner.
2. The combined internal fixation device for the treatment of proximal femoral bone diseases according to claim 1, wherein the main nail (1-2) has a hollow structure, a spindle-shaped locking hole (1-2-2) is formed at the proximal end thereof for cooperating with the helical blade (1-3), and a threaded structure is formed at the tail thereof for corresponding to the external thread of the tail plug (1-1).
3. The combined internal fixation device for the treatment of proximal femoral bone diseases according to claim 1, wherein the locking steel plate (2) has a screw blade insertion hole (2-3) for fitting the screw blade (1-3), and a head locking hole (2-1) and a stem locking hole (2-4) for fitting the locking screw (3).
4. The combined internal fixation device for the treatment of proximal femoral bone diseases according to claim 3, wherein the head locking holes (2-1) are three and arranged in a triangular shape; the cadre locking holes (2-4) are a plurality of and are arranged in a straight line or in a left-right offset mode at intervals.
5. The combined internal fixation device for the treatment of proximal femoral bone diseases according to claim 1, wherein the head of the locking steel plate (2) is provided with two bandage holes for achieving the enhanced fixation of the locking steel plate (2) and the bone by using bandages.
6. The combined internal fixation device for the treatment of proximal femoral bone diseases according to claim 1, wherein the proximal screw blade (1-3) has a hollow structure and the head has a screw blade type structure.
7. The combined internal fixation device for treating proximal femoral bone diseases according to claim 3, wherein the head of the locking screw (3) is of a straight thread or a tapered thread structure which is matched with the head locking hole (2-1) and the stem locking hole (2-4) on the locking steel plate (2), the stem is of a straight thread structure, and the distal head is of a self-tapping structure.
8. The combined internal fixation device for the treatment of proximal femoral bone diseases according to claim 1, wherein the transmission structure of the locking screw (3) is a hexagon socket or hexagon socket flower type structure.
9. The combined internal fixation device for the treatment of proximal femoral bone diseases according to claim 1, wherein the transmission structure of the tail plug (1-1) is an inner hexagonal structure or an inner hexagonal flower type structure.
10. The combined internal fixation device for the treatment of proximal femoral bone diseases according to claim 1, wherein the thread structure of the distal locking nail (1-4) is a shallow thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921772682.2U CN211325498U (en) | 2019-10-21 | 2019-10-21 | Combined internal fixing device for treating proximal femoral bone diseases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921772682.2U CN211325498U (en) | 2019-10-21 | 2019-10-21 | Combined internal fixing device for treating proximal femoral bone diseases |
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| Publication Number | Publication Date |
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| CN211325498U true CN211325498U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921772682.2U Active CN211325498U (en) | 2019-10-21 | 2019-10-21 | Combined internal fixing device for treating proximal femoral bone diseases |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112057154A (en) * | 2020-09-11 | 2020-12-11 | 天津市威曼生物材料有限公司 | Femoral internal fixation system |
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2019
- 2019-10-21 CN CN201921772682.2U patent/CN211325498U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112057154A (en) * | 2020-09-11 | 2020-12-11 | 天津市威曼生物材料有限公司 | Femoral internal fixation system |
| CN112057154B (en) * | 2020-09-11 | 2022-02-18 | 天津市威曼生物材料有限公司 | Femoral internal fixation system |
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