CN210521078U - Multidirectional locking intramedullary nail - Google Patents
Multidirectional locking intramedullary nail Download PDFInfo
- Publication number
- CN210521078U CN210521078U CN201921007449.5U CN201921007449U CN210521078U CN 210521078 U CN210521078 U CN 210521078U CN 201921007449 U CN201921007449 U CN 201921007449U CN 210521078 U CN210521078 U CN 210521078U
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- nail
- locking
- movable part
- mounting hole
- multidirectional
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Abstract
The utility model relates to a multidirectional locking intramedullary nail, which comprises a main nail, a movable part and a locking nail; the main body nail is provided with a component mounting hole; the movable component is arranged in the component mounting hole and turns along any angle; the movable part drives the locking nail to turn; the locking nail is tightly connected with the medullary bone and compresses the movable part, and the movable part expands outwards to fix the main nail. The problem of the locking nail that current scheme caused the through-hole when the angle can't be adjusted, can't adapt to for example local comminuted fracture or osteoporosis's installation environment and can appear the locking nail can't fix the firm phenomenon with the intramedullary nail is solved.
Description
Technical Field
The utility model relates to an intramedullary nail, in particular to a multidirectional locking intramedullary nail.
Background
Generally, with the progress of the medical level, the level of fracture treatment is also continuously increasing. Intramedullary nails are required for fracture surgery. Intramedullary nails undergo a transition from conventional steel plates to intramedullary nails. The intramedullary nail is fixed in a central way, and the defect of poor eccentric fixing stability of the traditional steel plate is overcome. After the intramedullary nail operation, the patient gets out of bed for early activity, the safety is good, and the bone healing is facilitated. Intramedullary nails are increasingly commonly used in the treatment of bone fractures. Intramedullary nails still present some of these critical problems. Currently, intramedullary nails are mostly locked by locking nails in fixed directions. In clinic, due to the limitation of diversification of fracture disease positions, the locking nail with a fixed angle cannot be used in a complex fracture environment, such as local comminuted fracture or osteoporosis, so that the expected effect of the product cannot be achieved, and even the operation is stopped or secondary damage occurs.
In the existing scheme, a plurality of through holes with different angles are formed in an intramedullary nail, and then the intramedullary nail is fixed by penetrating through the through holes through locking nails. Such a solution has the following problems: (1) the angle of the through hole formed in the intramedullary nail is fixed, and the angle cannot be adjusted when the locking nail passes through the through hole; (2) the locking nail passes through a through hole formed in the intramedullary nail and cannot adapt to the installation environment of local comminuted fracture or osteoporosis; (3) the locking nail passes through the through hole for fixing, and the phenomenon that the intramedullary nail cannot be firmly fixed by the locking nail can occur.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a multidirectional locking intramedullary nail to the unable angle is unable when solving among the prior art when the locking nail passes the through-hole is adjusted, unable adaptation for example local comminuted fracture or osteoporosis's installation environment and can appear the locking nail can't fix firm phenomenon scheduling problem with the intramedullary nail.
The utility model discloses the technical scheme who adopts as follows:
a multidirectional locking intramedullary nail, characterized in that:
comprises a main body nail, a movable part and a locking nail; the main body nail is provided with a component mounting hole; the movable component is arranged in the component mounting hole and turns along any angle; the movable part drives the locking nail to turn; the locking nail is tightly connected with the medullary bone and compresses the movable part, and the movable part expands outwards to fix the main nail.
The further technical scheme is as follows: the outer surface of the movable part is arc-shaped.
The further technical scheme is as follows: the inner surface of the component mounting hole is in the shape of a circular arc attached to the outer surface of the movable component.
The further technical scheme is as follows: the movable part is provided with a lock pin mounting hole; the lock pin penetrates through the lock pin mounting hole to be fixedly connected with the movable part.
The further technical scheme is as follows: and the locking nail mounting hole is provided with a reaming hole for amplifying the rotation angle of the locking nail.
The further technical scheme is as follows: the movable part and the locking nail are in compression connection through conical threads.
The utility model has the advantages as follows: the utility model designs a multidirectional locking intramedullary nail which adopts a movable part to drive a locking nail to realize the angle adjustment. And the rotation angle of the locking nail is increased by reaming. The movable part and the locking nail are in compression connection through the taper threads to fix the main body nail. The multidirectional locking of the intramedullary nail brings the following effects: (1) the movable part and the locking nail are matched to provide enough stability for the multidirectional locking intramedullary nail; (2) the movable part is connected with the locking nail to drive the locking nail to realize angle change; (3) the movable part is provided with a hole expansion to increase the rotation angle of the locking nail; (4) the movable part is connected with the locking nail by adopting tapered threads, so that the movable part can be locked, and the main nail can be firmly fixed; (5) the multidirectional locking intramedullary nail is mounted by adopting a plurality of movable parts and a plurality of locking nails, so that the support range of the multidirectional locking intramedullary nail is wider; (6) the rotation angle of the locking nail can be adjusted, so that the multidirectional locking intramedullary nail can realize the installation of complex fracture.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a main body nail; 2. a movable part; 3. locking nails; 4. a component mounting hole; 5. a locking pin mounting hole; 6. reaming; 7. a first external thread; 8. a second external thread.
Detailed Description
The following describes a specific embodiment of the present embodiment with reference to the drawings.
Fig. 1 is a schematic structural diagram of the present invention. Referring to fig. 1, the present invention discloses a multidirectional locking intramedullary nail. The direction of X in the figure does the utility model discloses structure schematic's upper end, the direction of Y in the figure does the utility model discloses structure schematic's right-hand member. The multidirectional locking intramedullary nail comprises a main nail 1, a movable part 2 and a locking nail 3.
The main body nail 1 is provided with a component mounting hole 4. The movable member 2 is mounted in the member mounting hole 4 and turned at any angle. The movable part 2 drives the locking nail 3 to turn. The locking nail 3 is tightly connected with the medullary bone and compresses the movable part 2, and the movable part 2 expands outwards to fix the main body nail 1.
The outer surface of the movable part 2 is arc-shaped. The inner surface of the component mounting hole 4 is in the shape of a circular arc that is fitted to the outer surface of the movable component 2.
The component mounting hole 4 is opened in the main body nail 1. The shape of the inner surface of the component mounting hole 4 is the same as the shape of the outer surface of the movable component 2. The flexibility of the movable member 2 to rotate in the member mounting hole 4 is ensured. The rotation of movable part 2 has also driven the rotation of staple 3, has realized that staple 3 can fasten movable part 2 of connection and fixed main part nail 1 from a plurality of directions.
The movable part 2 is provided with a locking nail mounting hole 5. The locking nail 3 passes through the locking nail mounting hole 5 and is fixedly connected with the movable part 2. The locking nail mounting hole 5 is provided with a reaming hole 6 for amplifying the rotation angle of the locking nail 3. The movable part 2 and the locking nail 3 are connected through conical threads in a pressing mode.
Preferably, the locking pin mounting hole 5 is a conical hole. The inner surface of the locking nail mounting hole 5 is provided with inner tapered threads. The outer surface of the locking nail 3 is provided with threads. The outer surface of the locking pin 3 is provided with a first external thread 7 and a second external thread 8. The first external thread 7 is provided at the left end of the outer surface of the locking nail 3. The second external thread 8 is provided at the right end of the outer surface of the locking nail 3. Preferably, the first external thread 7 is a straight thread. Preferably, the second external thread 8 is a tapered thread. The first external thread 7 is screwed into the intramedullary bone. The second external thread 8 is screwed into the movable part 2. The second external thread 8 is screwed into the lock pin mounting hole 5.
The movable part 2 and the locking nail 3 are in compression connection through the taper threads, the second external threads 8 form stronger pressure on the movable part 2, and the locking nail 3 achieves the locking function on the movable part 2. After the locking nail 3 locks the movable part 2, the movable part 2 can form outward tension, the movable part 2 expands, and the outer surface of the movable part 2 and the inner surface of the part mounting hole 4 generate large friction force, so that the effect of fixing the main body nail 1 is realized.
The component mounting hole 4 is a through hole. A counterbore 6 opens at the left end of the movable part 2. The rotation angle and the rotation range of the locking pin 3 can be continuously adjusted before the locking pin 3 is tightened. The counterbore 6 enlarges the rotational angle and range of rotation of the locking pin 3. So that the multidirectional locking intramedullary nail can cope with more complicated installation environments.
The co-operating mounting of the movable part 2 and the locking nail 3 provides sufficient stability for multidirectional locking of the intramedullary nail. Through set up a plurality of part mounting holes 4 on main part nail 1, through the cooperation installation of a plurality of movable part 2 and a plurality of locking nail 3, can realize multidirectional locking intramedullary nail wider support range.
In the present embodiment, the pin attaching hole 5 is described as a tapered hole, but the pin attaching hole is not limited thereto, and may be an attaching hole having another shape within a range capable of functioning.
In the present embodiment, the first male screw 7 is described as a straight screw, but the present invention is not limited thereto, and may be another screw within a range capable of functioning.
In the present embodiment, the second external thread 8 is described as a tapered thread, but the present invention is not limited thereto, and may be another thread within a range capable of functioning.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.
Claims (6)
1. A multidirectional locking intramedullary nail, characterized in that: comprises a main body nail (1), a movable part (2) and a locking nail (3); the main body nail (1) is provided with a component mounting hole (4); the movable part (2) is arranged in the part mounting hole (4) and turns along any angle; the movable part (2) drives the locking nail (3) to turn; the lock nail (3) is tightly connected with the medullary bone and compresses the movable part (2), and the movable part (2) expands outwards to fix the main nail (1).
2. The multidirectional locking intramedullary nail of claim 1, wherein: the outer surface of the movable part (2) is arc-shaped.
3. The multidirectional locking intramedullary nail of claim 2, wherein: the inner surface of the component mounting hole (4) is in a circular arc shape which is attached to the outer surface of the movable component (2).
4. The multidirectional locking intramedullary nail of claim 1, wherein: the movable part (2) is provided with a locking nail mounting hole (5); the locking nail (3) penetrates through the locking nail mounting hole (5) to be fixedly connected with the movable part (2).
5. The multidirectional locking intramedullary nail of claim 4, wherein: and the locking nail mounting hole (5) is provided with a reaming hole (6) for amplifying the rotation angle of the locking nail (3).
6. The multidirectional locking intramedullary nail of claim 1, wherein: the movable part (2) and the locking nail (3) are in compression connection through conical threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921007449.5U CN210521078U (en) | 2019-07-01 | 2019-07-01 | Multidirectional locking intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921007449.5U CN210521078U (en) | 2019-07-01 | 2019-07-01 | Multidirectional locking intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210521078U true CN210521078U (en) | 2020-05-15 |
Family
ID=70597313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921007449.5U Active CN210521078U (en) | 2019-07-01 | 2019-07-01 | Multidirectional locking intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210521078U (en) |
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2019
- 2019-07-01 CN CN201921007449.5U patent/CN210521078U/en active Active
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