CN217090868U - Intramedullary nail for implanting in femoral medullary cavity - Google Patents
Intramedullary nail for implanting in femoral medullary cavity Download PDFInfo
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- CN217090868U CN217090868U CN202123354716.6U CN202123354716U CN217090868U CN 217090868 U CN217090868 U CN 217090868U CN 202123354716 U CN202123354716 U CN 202123354716U CN 217090868 U CN217090868 U CN 217090868U
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Abstract
The utility model relates to the technical field of intramedullary nails, in particular to an intramedullary nail for implanting in a femoral medullary cavity, which is characterized by comprising a main nail; the main nail comprises a near end, a far end and a middle rod which are integrally connected; the near end is provided with a first through hole, a second through hole and a third through hole; the far end is provided with a through hole IV, a through hole V and a through hole VI; a first locking nail, a second locking nail, a third locking nail and a fourth locking nail are arranged in the second through hole, the fourth through hole, the fifth through hole and the sixth through hole; a tension screw I and a tension screw II are arranged in the through hole I and the through hole III; an arc-shaped passivation edge is arranged between the near end of the main nail and the middle rod. The beneficial effects of the utility model are that, inside convenient main nail implantation thighbone through arc passivation limit, lag screw and lock nail mutually support simultaneously, convenient locking and taut thighbone are convenient for resume. The device is beneficial to the operation of doctors and is also convenient for the subsequent recovery of patients.
Description
Technical Field
The utility model relates to the technical field of intramedullary nails, in particular to an intramedullary nail for being implanted into a femoral medullary cavity.
Background
Femur, also known as thigh bone, thigh bone and bar, is the longest tubular bone in the human body. The upper end of the hip joint is formed by a femoral head and an acetabulum, and the lower end of the hip joint is formed by a patella and the upper end of a tibia to support the weight of the whole body. Femoral fractures occur more readily at the proximal end and less frequently at the distal end. Fractures of the proximal end of the femur vary with age: children can have green branch fracture, and teenagers can have epiphyseal displacement; adult can have dislocation of hip joint, and old people are easy to have femoral head fracture. Fracture healing requires a good mechanical environment, that is, the internal fixation therapy of fracture satisfies the principle of elastic fixation: stable fixation, non-functional substitution and physiological stress of broken ends. However, when the existing femur retrograde intramedullary nail on the market is used, the intramedullary nail is not convenient to be placed in the femur due to the fact that the intramedullary nail is arranged in a flat head, the use is inconvenient, meanwhile, the weight of the intramedullary nail is heavier, production consumables are more, and the production cost is increased.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides an intramedullary nail for being implanted into the medullary cavity of the femur.
The utility model provides a technical scheme that its technical problem adopted is: an intramedullary nail for implantation in the medullary cavity of a femur, characterized in that it comprises a main nail; the main nail comprises a near end, a far end and a middle rod which are integrally connected; the near end is provided with a first through hole, a second through hole and a third through hole; the far end is provided with a through hole IV, a through hole V and a through hole VI; a first locking nail, a second locking nail, a third locking nail and a fourth locking nail are arranged in the second through hole, the fourth through hole, the fifth through hole and the sixth through hole; a tension screw I and a tension screw II are arranged in the through hole I and the through hole III; an arc-shaped passivation edge is arranged on the side face between the near end of the main nail and the middle rod.
According to another embodiment of the present invention, further comprising that the first through hole, the third through hole, the fourth through hole and the sixth through hole are arranged in parallel; an included angle between the fifth through hole and the fourth through hole is 90 degrees, and an included angle between the second through hole and the first through hole is 30 degrees.
According to another embodiment of the present invention, further comprising that the first through hole, the third through hole, the fourth through hole and the fifth through hole are circular through holes; the second through hole and the sixth through hole are oval through holes.
According to the utility model discloses a further embodiment, further include, the first lag screw and the second lag screw both ends are equipped with the packing ring.
According to another embodiment of the present invention, further comprising that the main nail is a hollow rod, and the tail of the proximal end is provided with a positioning notch; and a sealing cap is connected in the positioning notch through threads.
According to the utility model discloses a further embodiment, further include, be equipped with rectangular shape recess in the middle of the main nail.
According to another embodiment of the present invention, further comprising that the main nail, the locking nail and the lag screw are made of titanium alloy material.
The beneficial effects of the utility model are that, through inside the convenient main nail implantation thighbone of arc passivation limit, lag screw and lock nail mutually support simultaneously, conveniently lock and taut thighbone, are convenient for resume. The device is beneficial to the operation of doctors and is also convenient for the subsequent recovery of patients.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a front view of the present invention;
fig. 4 is a side view of the present invention.
In the drawing, 1 part of a main nail, 1-1 part of a near end, 1-2 parts of a middle rod, 1-3 parts of a far end, 1-4 parts of an arc-shaped passivated edge, 1-5 parts of a positioning notch, 2 parts of a through hole I, 3 parts of a through hole II, 4 parts of a through hole III, 5 parts of a through hole IV, 6 parts of a through hole V, 7 parts of a through hole VI, 8 parts of a locking nail I, 9 parts of a locking nail II, 10 parts of a locking nail III, 11 parts of a locking nail IV, 12 parts of a locking nail IV, 13 parts of a tension screw II, 14 parts of a tension screw II and a sealing cap are arranged.
Detailed Description
Fig. 1 is a schematic structural view of the present invention, an intramedullary nail for implantation in a femoral medullary cavity, which is characterized by comprising a main nail 1; the main nail 1 comprises a near end 1-1, a far end 1-3 and a middle rod 1-2 which are integrally connected; the near end 1-1 is provided with a first through hole 2, a second through hole 3 and a third through hole 4; the far end 1-3 is provided with a through hole IV 5, a through hole V6 and a through hole VI 7; a first lock pin 8, a second lock pin 9, a third lock pin 10 and a fourth lock pin 11 are arranged in the second through hole 3, the fourth through hole 5, the fifth through hole 6 and the sixth through hole 7; a tension screw I12 and a tension screw II 13 are arranged in the through hole I2 and the through hole III 4; an arc-shaped passivation edge 1-4 is arranged on the side surface between the near end 1-1 of the main nail and the middle rod 1-2.
In particular, the arc-shaped blunt edges 1-4 reduce the damage of the main nail 1 implanted into the femur.
According to another embodiment of the present invention, further comprising that the first through hole 2, the third through hole 4, the fourth through hole 5 and the sixth through hole 7 are arranged in parallel; the five 6 and four 5 contained angles of through-hole are 90, through-hole two 3 and through-hole 2 contained angles are 30, the contained angle accords with the thighbone condition more, can lock the main nail better.
According to another embodiment of the present invention, further comprising that the first through hole 2, the third through hole 4, the fourth through hole 5 and the fifth through hole 6 are circular through holes; the second through hole 3 and the sixth through hole 7 are oval through holes, and the oval through holes are convenient for selecting proper positions to lock.
According to another embodiment of the present invention, further comprising, the first lag screw 12 and the second lag screw 13 are provided with washers at both ends.
According to another embodiment of the present invention, further comprising that the main nail 1 is a hollow rod, and the tail of the near end 1-1 is provided with a positioning notch 1-5; the positioning notches 1-5 are internally threaded with a sealing cap 14, and the positioning notches 1-5 are used for connecting a sighting device and are convenient to be connected with the sealing cap 14 to seal the tail end after a locking nail and a tension screw are implanted.
According to another embodiment of the present invention, further comprising that the main nail intermediate bar 1-2 is provided with an elongated groove.
Particularly, the main nail 1 is a hollow rod, so that the weight is conveniently reduced, the material consumption is reduced, and the cost is reduced; the elongated grooves facilitate confirmation of direction and position.
According to the utility model discloses a further embodiment, further include, main nail 1, a lock nail 8, two 9, three 10, four 11, the lag screw 12 of lock nail and two 13 of lag screw are made for titanium alloy material, and this material quality is light, and the disease comfort is high.
In the specific operation process, relevant preparation work is carried out on the femoral fracture part; hammering the main nail 1 into the femur, and adjusting the position to be satisfied; the positioning notches 1-5 are locked with the aiming device, puncturing and drilling are carried out through the aiming device, and a first locking nail 8, a second locking nail 9, a third locking nail 10, a fourth locking nail 11, a first tension screw 12 and a second tension screw 13 are implanted; the first lock nail 8, the second lock nail 9, the third lock nail 10, the fourth lock nail 11, the first tension screw 12, the second tension screw 13 and the main nail are matched with each other to be locked.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. An intramedullary nail for implantation in the femoral medullary cavity, characterized in that it comprises a main nail (1); the main nail (1) comprises a near end (1-1), a far end (1-3) and a middle rod (1-2) which are integrally connected; the near end (1-1) is provided with a first through hole (2), a second through hole (3) and a third through hole (4); the far end (1-3) is provided with a through hole IV (5), a through hole V (6) and a through hole VI (7); a first lock nail (8), a second lock nail (9), a third lock nail (10) and a fourth lock nail (11) are arranged in the second through hole (3), the fourth through hole (5), the fifth through hole (6) and the sixth through hole (7); a tension screw I (12) and a tension screw II (13) are arranged in the through hole I (2) and the through hole III (4); an arc-shaped passivation edge (1-4) is arranged on the side surface between the near end (1-1) of the main nail and the middle rod (1-2).
2. Intramedullary nail for implantation in the medullary cavity of a femur according to claim 1, characterized in that said first (2), third (4), fourth (5) and sixth (7) through holes are arranged in parallel; the included angle between the fifth through hole (6) and the fourth through hole (5) is 90 degrees, and the included angle between the second through hole (3) and the first through hole (2) is 30 degrees.
3. Intramedullary nail for implantation in the medullary cavity of a femur, according to claim 1, characterized in that said first (2), third (4), fourth (5) and fifth (6) through holes are circular; and the second through hole (3) and the sixth through hole (7) are oval through holes.
4. Intramedullary nail for implantation in the medullary cavity of the femur according to claim 1, characterized in that said first (12) and second (13) lag screws are provided with washers at both ends.
5. Intramedullary nail for implantation in the medullary cavity of the femur according to claim 1, characterized in that the main nail (1) is a hollow rod, the proximal end (1-1) being provided with a positioning notch (1-5) at its tail; the positioning notch (1-5) is internally threaded with a sealing cap (14).
6. Intramedullary nail for implantation in the medullary cavity of the femur according to claim 1, characterized in that the central rod (1-2) of the main nail is provided with an elongated groove.
7. The intramedullary nail for implanting in a femoral medullary cavity according to claim 1, wherein the main nail (1), the first locking nail (8), the second locking nail (9), the third locking nail (10), the fourth locking nail (11), the first lag screw (12) and the second lag screw (13) are made of titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123354716.6U CN217090868U (en) | 2021-12-29 | 2021-12-29 | Intramedullary nail for implanting in femoral medullary cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123354716.6U CN217090868U (en) | 2021-12-29 | 2021-12-29 | Intramedullary nail for implanting in femoral medullary cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217090868U true CN217090868U (en) | 2022-08-02 |
Family
ID=82592937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123354716.6U Active CN217090868U (en) | 2021-12-29 | 2021-12-29 | Intramedullary nail for implanting in femoral medullary cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217090868U (en) |
-
2021
- 2021-12-29 CN CN202123354716.6U patent/CN217090868U/en active Active
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